Which graph BEST reflects the possible outcome of a giant volcanic release of methane and other greenhouse gases into the atmosphere?

A) A.

B) B.

C) C.

D) D.

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

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Diagram of the evolution of land plants?