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Different forms of energy sources have helped us in many ways from running our vehicles to cooking at home or generating electricity. There are two types of energy sources-renewable and non-renewable energy resources. The former is where the energy resources do not get depleted and they can be used repeatedly whereas non-renewable energy resources cannot be used again and again.
We cannot even imagine a life without the existence of fossil fuels like crude oil; coal and natural gas. But, usage of these energy resources creates lot of problems. Global warming, increase in prices of fossil fuels, and the threat of peak oil are major concerns around the globe but what steps are we taking to overcome all these issues? If we stop consuming fossil fuels, we can stop global warming and save non renewable energy resources for our future generations to deploy. But, at the same time we need to seek an alternative to meet our requirements. We come across these topics on television, internet, and magazines and there is a lot of debate going on with regards to these topics. Is it possible for us to overcome the crisis? Only alternative energy solutions can help us as well as our environment to some extent.
Industries that deal with alternative energy solutions like solar and wind power thrive hard to save our environment. Even though modern technologies are being implemented to extract crude oil from places. Which were not reachable earlier, it is still nor possible to meet the growing demand. The demand for fossil fuels is increasing due to the rapid increase in population growth. Alternative energy -solutions have lot of benefits when compared to non-renewable energy resources. Industries have started investing their time and money in researching as well as setting up power plants.
Certain home users hesitate to go for alternative energy solutions as initial investment needs to be made. However, once the equipment is installed, there will be no maintenance costs or other repetitive costs. Apart from the set up cost, energy from the sun and the wind will always be free in any part of the country and there is no need for being dependent upon other countries. On the other hand, the prices of renewable energy resources keep increasing and certain countries have to dependent upon major oil producing countries. Home users who consume alternative energy resources can cut down on their electricity bills.
Every system has its own pros and cons but the best and wise thing to do is weigh the options that are available and choose the energy resources that offers long-term benefits. When it comes to alternative energy solutions, setting up solar plants and building windmills is a huge and complicated process but once they are set up, they offer endless benefits. In case of fossil fuels, oil companies need to locate the proven reserves, dig oil wells, extract oil, and convert into a more usable from so that it can reach the end consumer.
The ideas in the passage may be best summarized that ...
1
0.0
Different forms of energy sources have helped us in many ways from running our vehicles to cooking at home or generating electricity. There are two types of energy sources-renewable and non-renewable energy resources. The former is where the energy resources do not get depleted and they can be used repeatedly whereas non-renewable energy resources cannot be used again and again.
We cannot even imagine a life without the existence of fossil fuels like crude oil; coal and natural gas. But, usage of these energy resources creates lot of problems. Global warming, increase in prices of fossil fuels, and the threat of peak oil are major concerns around the globe but what steps are we taking to overcome all these issues? If we stop consuming fossil fuels, we can stop global warming and save non renewable energy resources for our future generations to deploy. But, at the same time we need to seek an alternative to meet our requirements. We come across these topics on television, internet, and magazines and there is a lot of debate going on with regards to these topics. Is it possible for us to overcome the crisis? Only alternative energy solutions can help us as well as our environment to some extent.
Industries that deal with alternative energy solutions like solar and wind power thrive hard to save our environment. Even though modern technologies are being implemented to extract crude oil from places. Which were not reachable earlier, it is still nor possible to meet the growing demand. The demand for fossil fuels is increasing due to the rapid increase in population growth. Alternative energy -solutions have lot of benefits when compared to non-renewable energy resources. Industries have started investing their time and money in researching as well as setting up power plants.
Certain home users hesitate to go for alternative energy solutions as initial investment needs to be made. However, once the equipment is installed, there will be no maintenance costs or other repetitive costs. Apart from the set up cost, energy from the sun and the wind will always be free in any part of the country and there is no need for being dependent upon other countries. On the other hand, the prices of renewable energy resources keep increasing and certain countries have to dependent upon major oil producing countries. Home users who consume alternative energy resources can cut down on their electricity bills.
Every system has its own pros and cons but the best and wise thing to do is weigh the options that are available and choose the energy resources that offers long-term benefits. When it comes to alternative energy solutions, setting up solar plants and building windmills is a huge and complicated process but once they are set up, they offer endless benefits. In case of fossil fuels, oil companies need to locate the proven reserves, dig oil wells, extract oil, and convert into a more usable from so that it can reach the end consumer.
The paragraph preceding the passage most likely deals with ...
1
0.0
Different forms of energy sources have helped us in many ways from running our vehicles to cooking at home or generating electricity. There are two types of energy sources-renewable and non-renewable energy resources. The former is where the energy resources do not get depleted and they can be used repeatedly whereas non-renewable energy resources cannot be used again and again.
We cannot even imagine a life without the existence of fossil fuels like crude oil; coal and natural gas. But, usage of these energy resources creates lot of problems. Global warming, increase in prices of fossil fuels, and the threat of peak oil are major concerns around the globe but what steps are we taking to overcome all these issues? If we stop consuming fossil fuels, we can stop global warming and save non renewable energy resources for our future generations to deploy. But, at the same time we need to seek an alternative to meet our requirements. We come across these topics on television, internet, and magazines and there is a lot of debate going on with regards to these topics. Is it possible for us to overcome the crisis? Only alternative energy solutions can help us as well as our environment to some extent.
Industries that deal with alternative energy solutions like solar and wind power thrive hard to save our environment. Even though modern technologies are being implemented to extract crude oil from places. Which were not reachable earlier, it is still nor possible to meet the growing demand. The demand for fossil fuels is increasing due to the rapid increase in population growth. Alternative energy -solutions have lot of benefits when compared to non-renewable energy resources. Industries have started investing their time and money in researching as well as setting up power plants.
Certain home users hesitate to go for alternative energy solutions as initial investment needs to be made. However, once the equipment is installed, there will be no maintenance costs or other repetitive costs. Apart from the set up cost, energy from the sun and the wind will always be free in any part of the country and there is no need for being dependent upon other countries. On the other hand, the prices of renewable energy resources keep increasing and certain countries have to dependent upon major oil producing countries. Home users who consume alternative energy resources can cut down on their electricity bills.
Every system has its own pros and cons but the best and wise thing to do is weigh the options that are available and choose the energy resources that offers long-term benefits. When it comes to alternative energy solutions, setting up solar plants and building windmills is a huge and complicated process but once they are set up, they offer endless benefits. In case of fossil fuels, oil companies need to locate the proven reserves, dig oil wells, extract oil, and convert into a more usable from so that it can reach the end consumer.
In presenting the ideas, the author starts by ...
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0.0
Different forms of energy sources have helped us in many ways from running our vehicles to cooking at home or generating electricity. There are two types of energy sources-renewable and non-renewable energy resources. The former is where the energy resources do not get depleted and they can be used repeatedly whereas non-renewable energy resources cannot be used again and again.
We cannot even imagine a life without the existence of fossil fuels like crude oil; coal and natural gas. But, usage of these energy resources creates lot of problems. Global warming, increase in prices of fossil fuels, and the threat of peak oil are major concerns around the globe but what steps are we taking to overcome all these issues? If we stop consuming fossil fuels, we can stop global warming and save non renewable energy resources for our future generations to deploy. But, at the same time we need to seek an alternative to meet our requirements. We come across these topics on television, internet, and magazines and there is a lot of debate going on with regards to these topics. Is it possible for us to overcome the crisis? Only alternative energy solutions can help us as well as our environment to some extent.
Industries that deal with alternative energy solutions like solar and wind power thrive hard to save our environment. Even though modern technologies are being implemented to extract crude oil from places. Which were not reachable earlier, it is still nor possible to meet the growing demand. The demand for fossil fuels is increasing due to the rapid increase in population growth. Alternative energy -solutions have lot of benefits when compared to non-renewable energy resources. Industries have started investing their time and money in researching as well as setting up power plants.
Certain home users hesitate to go for alternative energy solutions as initial investment needs to be made. However, once the equipment is installed, there will be no maintenance costs or other repetitive costs. Apart from the set up cost, energy from the sun and the wind will always be free in any part of the country and there is no need for being dependent upon other countries. On the other hand, the prices of renewable energy resources keep increasing and certain countries have to dependent upon major oil producing countries. Home users who consume alternative energy resources can cut down on their electricity bills.
Every system has its own pros and cons but the best and wise thing to do is weigh the options that are available and choose the energy resources that offers long-term benefits. When it comes to alternative energy solutions, setting up solar plants and building windmills is a huge and complicated process but once they are set up, they offer endless benefits. In case of fossil fuels, oil companies need to locate the proven reserves, dig oil wells, extract oil, and convert into a more usable from so that it can reach the end consumer.
The author's bias regarding is that ...
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0.0
The food stimulating a suspicion is on course for inspiring even more wonder from a medical standpoint as scientists have reported the latest evidence that chili peppers are a heart-healthy food with potential to protect against the no. 1 cause of death in the developed world. The report was part of the 243rd National Meeting and Exposition of the American Chemical Society (ACS).
The study focused on capsaicin and its fiery-hot relatives, a spicy family of substances termed “capsaicinoids”. As the stuff that gives cayennes, jalapenos, habaneros and other chili peppers their heat, capsaicin already has an established role in rub-on-the-skin creams to treat arthritis and certain forms of pain. Past research suggested that spicing food with chilies can lower blood pressure in people with that condition, reduce blood cholesterol, and ease the tendency for dangerous blood clots to form.
“Our research has reinforced and expanded knowledge about how these substances in chilies work in improving heart health,” said Zhen-Yu Chen, who presented the study. “ We now have a clearer and more detailed portrait of their innermost effects on genes and other mechanism that influence cholesterol and the health of blood vessels. It is among the first research to provide that information. “ The team found, for instance, that capsaicin and a close chemical relative boost heart health in two ways. They lower cholesterol levels by reducing accumulation of cholesterol in the body and increasing its breakdown and excretion in the feces. They also block action of a gene that makes arteries contract, restricting the flow of blood to the hearts and other organs. The blocking action allows more blood to flow through blood vessels.
“We conclude that capsaicinoid were beneficial in improving a range of factors related to heart and blood vessel health,” said Chen, a professor of food and nutritional science at the Chinese University of Hong Kong. “But we certainly do not recommend that people start consuming chilies to an excess. A good diet is a matter of balance. And remember, chilies are no substitute for the prescription for meditations proven to be beneficial. They may be a nice supplement, however, for people who find the hot flavour pleasant”.
Chen and his colleagues turned to hamsters for the study, animals that serve as stand-ins for humans in research that cannot be performed in people. They gave the hamsters high-cholesterol diets, divides them into groups, and supplemented each group’s food with either no capsaicinoids in the control group or various amounts of capsaicinoids. The scientists then analysed the effects.
In addition to reducing total cholesterol levels in the blood, capsaicinoids reduced levels of the so-called “bad” cholesterol which deposits into blood vessels, but did not affect levels of so-called “good” cholesterol. The team found indications that capsaicinoids may reduce the size of deposits that already have formed in blood vessels, narrowing arteries in ways that can lead to heart attacks or strokes.
Capsaicinoids also blocked the activity of a gene that produce cycloosygenase-2, a substance that makes the muscles around blood vessels tighten. By blocking it, muscles can relax and widen, allowing more blood to flow.
With reference to capsaicinoids described in the passage, the author and Prof. Chen believe that,,,
1
0.0
The present study sought to document the word reading and comprehension levels attained by children who were implanted by 5 year of age. It was hypothesized that the improved speech perception anilities acquired with cochlear implantation would promote phonological coding skills. (1)…
Three subtests of diagnostic reading assessment batteries standardized on hearing children were administered to 181 children between 8 year 0 month and 9 year 11 month of age who had 4 to 6 years of implant experience. (2) … It included a lexical decision task, a rhyme task, and the digit span subtests of the Wechsler Intelligence Scale for Children.
Over half of the children scored within the average range for their age compared with the normative data for hearing children. (3) … They were higher nonverbal intelligence, higher family socio-economic status, and later onset of deafness between birth and 36 months.
(Adapted from Journal of Ear and Hearing)
Which option best completes (3)?
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5.0
As spring arrives, albeit quite late this year for many of us, we notice the changing of seasons not only by the weather, but also by a host of natural events. Depending on where you live, the flowers may poke through the snow, the birds may be back, or the cherry trees may bloom. There is an orderly sequence of events that seem to occur, with various spring flowers appearing in order, red maple buds bursting into new layers, or the old lilac by the barn scenting the air. This seasonal cycle of natural phenomena is called phenology. Global climate change appears to be interfering with the phenology of many species, at the very heart of species interactions.
In temperate regions like northern half the United States, there is comparatively little biological activity in winter. Most plants are dormant, and so are the insects feeding on them. In turn, animal that rely on these insects, such as bats and birds, are hibernating or spending the cold months in more southerly locations. Ectotherms like reptiles and amphibians, which period constrains all the growing, breeding, and dispersing activities that plants and animals do to a short favorable window. That is what makes spring so vibrant, with plants flowering and putting on new growth, insects emerging and breeding, and birds flying back to take advantage of this short-lived bounty. The onsets of each of these activities add up to so many phonological markers.
Different organism respond to different cues to initiate seasonal activities. Many plants will start growing leaves again after a set period of dormancy, which very roughly dictates the leaf-out window. Cues that more precisely determine when the buds break can be soil temperature, air temperature, or water availability. Similarly, temperature cues can promote the beginning of insect activity. Day length itself can be the operative trigger for some seasonal events. It is only when there are a sufficient number of daylight hours that reproductive hormones will be produced in many bird species.
The most energy-demanding period in the life of most animals is when they reproduce. For that reason, it is to their advantage to coincide breeding (and for many, the raising of young) during a period when food is most abundant. Caterpillars should hatch just as the young tender leaves of oak tree emerge, before they harden and become less nutritious. Breeding songbirds need to time the hatching of their young just during that peak in caterpillar activity, so they can take advantage of this rich source of protein to feed their offspring. Many species have evolved to exploit peaks in resource availability, so all these seemingly independent phonological events are indeed part of a complex web of precise interactions. Disturbances in seasonal events can have profound effects on ecosystems.
Based on the passage, it can be hypothesized that reproductive hormones in many bird species will not be produced if...
1
0.0
As spring arrives, albeit quite late this year for many of us, we notice the changing of seasons not only by the weather, but also by a host of natural events. Depending on where you live, the flowers may poke through the snow, the birds may be back, or the cherry trees may bloom. There is an orderly sequence of events that seem to occur, with various spring flowers appearing in order, red maple buds bursting into new layers, or the old lilac by the barn scenting the air. This seasonal cycle of natural phenomena is called phenology. Global climate change appears to be interfering with the phenology of many species, at the very heart of species interactions.
In temperate regions like northern half the United States, there is comparatively little biological activity in winter. Most plants are dormant, and so are the insects feeding on them. In turn, animal that rely on these insects, such as bats and birds, are hibernating or spending the cold months in more southerly locations. Ectotherms like reptiles and amphibians, which period constrains all the growing, breeding, and dispersing activities that plants and animals do to a short favorable window. That is what makes spring so vibrant, with plants flowering and putting on new growth, insects emerging and breeding, and birds flying back to take advantage of this short-lived bounty. The onsets of each of these activities add up to so many phonological markers.
Different organism respond to different cues to initiate seasonal activities. Many plants will start growing leaves again after a set period of dormancy, which very roughly dictates the leaf-out window. Cues that more precisely determine when the buds break can be soil temperature, air temperature, or water availability. Similarly, temperature cues can promote the beginning of insect activity. Day length itself can be the operative trigger for some seasonal events. It is only when there are a sufficient number of daylight hours that reproductive hormones will be produced in many bird species.
The most energy-demanding period in the life of most animals is when they reproduce. For that reason, it is to their advantage to coincide breeding (and for many, the raising of young) during a period when food is most abundant. Caterpillars should hatch just as the young tender leaves of oak tree emerge, before they harden and become less nutritious. Breeding songbirds need to time the hatching of their young just during that peak in caterpillar activity, so they can take advantage of this rich source of protein to feed their offspring. Many species have evolved to exploit peaks in resource availability, so all these seemingly independent phonological events are indeed part of a complex web of precise interactions. Disturbances in seasonal events can have profound effects on ecosystems.
The paragraph following the passage most likely deals with ...
2
0.0
As spring arrives, albeit quite late this year for many of us, we notice the changing of seasons not only by the weather, but also by a host of natural events. Depending on where you live, the flowers may poke through the snow, the birds may be back, or the cherry trees may bloom. There is an orderly sequence of events that seem to occur, with various spring flowers appearing in order, red maple buds bursting into new layers, or the old lilac by the barn scenting the air. This seasonal cycle of natural phenomena is called phenology. Global climate change appears to be interfering with the phenology of many species, at the very heart of species interactions.
In temperate regions like northern half the United States, there is comparatively little biological activity in winter. Most plants are dormant, and so are the insects feeding on them. In turn, animal that rely on these insects, such as bats and birds, are hibernating or spending the cold months in more southerly locations. Ectotherms like reptiles and amphibians, which period constrains all the growing, breeding, and dispersing activities that plants and animals do to a short favorable window. That is what makes spring so vibrant, with plants flowering and putting on new growth, insects emerging and breeding, and birds flying back to take advantage of this short-lived bounty. The onsets of each of these activities add up to so many phonological markers.
Different organism respond to different cues to initiate seasonal activities. Many plants will start growing leaves again after a set period of dormancy, which very roughly dictates the leaf-out window. Cues that more precisely determine when the buds break can be soil temperature, air temperature, or water availability. Similarly, temperature cues can promote the beginning of insect activity. Day length itself can be the operative trigger for some seasonal events. It is only when there are a sufficient number of daylight hours that reproductive hormones will be produced in many bird species.
The most energy-demanding period in the life of most animals is when they reproduce. For that reason, it is to their advantage to coincide breeding (and for many, the raising of young) during a period when food is most abundant. Caterpillars should hatch just as the young tender leaves of oak tree emerge, before they harden and become less nutritious. Breeding songbirds need to time the hatching of their young just during that peak in caterpillar activity, so they can take advantage of this rich source of protein to feed their offspring. Many species have evolved to exploit peaks in resource availability, so all these seemingly independent phonological events are indeed part of a complex web of precise interactions. Disturbances in seasonal events can have profound effects on ecosystems.
The author's attitude towards the seasonal cycle of natural events is ...
1
0.0
As spring arrives, albeit quite late this year for many of us, we notice the changing of seasons not only by the weather, but also by a host of natural events. Depending on where you live, the flowers may poke through the snow, the birds may be back, or the cherry trees may bloom. There is an orderly sequence of events that seem to occur, with various spring flowers appearing in order, red maple buds bursting into new layers, or the old lilac by the barn scenting the air. This seasonal cycle of natural phenomena is called phenology. Global climate change appears to be interfering with the phenology of many species, at the very heart of species interactions.
In temperate regions like northern half the United States, there is comparatively little biological activity in winter. Most plants are dormant, and so are the insects feeding on them. In turn, animal that rely on these insects, such as bats and birds, are hibernating or spending the cold months in more southerly locations. Ectotherms like reptiles and amphibians, which period constrains all the growing, breeding, and dispersing activities that plants and animals do to a short favorable window. That is what makes spring so vibrant, with plants flowering and putting on new growth, insects emerging and breeding, and birds flying back to take advantage of this short-lived bounty. The onsets of each of these activities add up to so many phonological markers.
Different organism respond to different cues to initiate seasonal activities. Many plants will start growing leaves again after a set period of dormancy, which very roughly dictates the leaf-out window. Cues that more precisely determine when the buds break can be soil temperature, air temperature, or water availability. Similarly, temperature cues can promote the beginning of insect activity. Day length itself can be the operative trigger for some seasonal events. It is only when there are a sufficient number of daylight hours that reproductive hormones will be produced in many bird species.
The most energy-demanding period in the life of most animals is when they reproduce. For that reason, it is to their advantage to coincide breeding (and for many, the raising of young) during a period when food is most abundant. Caterpillars should hatch just as the young tender leaves of oak tree emerge, before they harden and become less nutritious. Breeding songbirds need to time the hatching of their young just during that peak in caterpillar activity, so they can take advantage of this rich source of protein to feed their offspring. Many species have evolved to exploit peaks in resource availability, so all these seemingly independent phonological events are indeed part of a complex web of precise interactions. Disturbances in seasonal events can have profound effects on ecosystems.
The author's bias regarding spring phenology is that ...
1
0.0
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