There is no one best way to deal with pests in agriculture. Pesticides are commonly used, but this may cause many problems. First, the chemicals in pesticides may build up as residues in the environment. This reduces the quality of farms’ products. As well, pests can gradually become resistant to pesticides. This means that newer and stronger ones have to be developed. Some pesticides also affect non target animals such as fish and bees. This affects natural balance. To wipe out agricultural pests completely may be very expensive. Sometimes, pest damage cost less than the method of control. Finally, understanding the ecology of the area will help a lot in pest control. Natural enemies can be used to control pests. In other words, it can be said that an integrated pest management (i.e. an ecological approach that can significantly reduce or eliminate the uses of pesticides) is safer and more effective to be used as a solution to deal with pests in agriculture. “To wipe out agricultural pests completely may be very expensive.” (paragraph 4) The underlined phrase means …

Question

There is no one best way to deal with pests in agriculture. Pesticides are commonly used, but this may cause many problems.

First, the chemicals in pesticides may build up as residues in the environment. This reduces the quality of farms’ products. As well, pests can gradually become resistant to pesticides. This means that newer and stronger ones have to be developed. Some pesticides also affect non target animals such as fish and bees. This affects natural balance.

To wipe out agricultural pests completely may be very expensive. Sometimes, pest damage cost less than the method of control.

Finally, understanding the ecology of the area will help a lot in pest control. Natural enemies can be used to control pests. In other words, it can be said that an integrated pest management (i.e. an ecological approach that can significantly reduce or eliminate the uses of pesticides) is safer and more effective to be used as a solution to deal with pests in agriculture.

“To wipe out agricultural pests completely may be very expensive.” (paragraph 4)

The underlined phrase means …