How do organisms get energy from food? inside an organism's cells, food molecules are broken down and rearranged through chemical reactions. the reactions release chemical energy that the cells can use to power growth and other important cell processes. these processes allow the entire organism to live and grow.

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.