All of the living organisms in a forest plus their environment is an example of

Explanation:

eco system

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:

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.