When a(n) organism enters an established ecosystem, it competes with some of the native organisms for food. as a result, the entire ecosystem can be thrown out of balance?

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:

when it is at an intermediate population density