Is the prime meridian where the earths atmosphere and space begins?

Very roughly, it starts about 100 kilometers above the Earth, but there is still part of the Earth's atmosphere even at this altitude.

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: