What can you infer from the fact that ants make up 20
percent of the mass of all land animals combined?

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a. control b. hypothesis c. procedure d. system

Cells control gene expression at which steps

Which environmental change would most likely result in bullfrog offspring that are able to store more water than bullfrogs in previous generations?