Mid-ocean ridges, which contribute to the process of sea-floor spreading, form as a result of .

A. earthquake activity that causes subduction

B. a rift valley, like the Red Sea, being filled

C. older ocean floor that moves toward the ridge

D. volcanic activity that produces magma

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation:

the answer to you question is   jet streams

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.