Which of the following is not a basic method used by ecologists to study the living world?
a. experimenting
b. animal training
c. modeling
d. observing

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:

true                                                                                                       true true true true true true