Adenosine triphosphate (ATP) is made up of… a) Deoxyribose, cytosine base and triphosphate group.
b) Deoxyribose, adenine base and triphosphate group.
c) Ribose, cytosine base and triphosphate group.
d) Ribose, adenine base and triphosphate group.

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution