In your own words, what is an antigen?

a toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.

Explanation:

it will increase due to the time span

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: