The following text is for questions number 27 to 29. Star A star is a bright ball of super hot gases … (27) together by gravity. …(28) look white or blue. Meanwhile, cooler stars look red or orange. Scientists believe that there are billions of galaxies in the universe and each galaxy has billions of stars. Stars live billions of years. During their life, they turn hydrogen into helium. As their energy runs out, they slowly cool. First, they expand and get rid of their …(29) layers. Then they shrink and turn white. These stars are called white dwarfs. Finally, their light goes out completely and they become black. (Source: www.coolkidfacts.com ) The best answer to complete question number 29 is….

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The following text is for questions number 27 to 29.

Star

A star is a bright ball of super hot gases … (27) together by gravity. …(28) look white or blue. Meanwhile, cooler stars look red or orange. Scientists believe that there are billions of galaxies in the universe and each galaxy has billions of stars.

Stars live billions of years. During their life, they turn hydrogen into helium. As their energy runs out, they slowly cool. First, they expand and get rid of their …(29) layers. Then they shrink and turn white. These stars are called white dwarfs. Finally, their light goes out completely and they become black.

(Source: www.coolkidfacts.com)

The best answer to complete question number 29 is….

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