Which area on the illustration represents the largest reservoir of nitrogen on earth?

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

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.