Which substance is removed from the atmosphere so that plants can carry out photosynthesis?

A) nitrogen

B) water vapor

C) oxygen

D) carbon dioxide

I believe it's D but I'm not sure

What is the change in appearance of DNA during cell division

Should human be cloned

Wild‑type E. coli cells can synthesize all 20 common amino acids, but some mutants, called amino acid auxotrophs, are unable to synthesize a specific amino acid and require its addition to the culture medium for optimal growth.

What is the purpose of gene therapy?

Which phrase best summarizes the theory of evolution by natural selection? Parent organisms pass on traits they have acquired during their lifetime. Life must come from other life. Only the strongest animals survive.

There are many different types of objects in the solar system. Which type of object is the Sun? A. star B. outer planet C. asteroid D. inner planet

Cell Division 1. Why do we have two types of cell division? (mitosis and meiosis) Explain your answer

Under what circumstances would an early reading be allowable

One of the biggest ways that species evolve evolve it because organisms with some treats survive and reproduce better than others. this process is known as the?

What may happen to magma that does not reach Earth's surface