Which one of these create water pollution?
a. carbon dioxide
b. chlorofluorocarbons
c. nitrates
d. dust particles

Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air