Why are there limited levels of consumers? for example, apex predators are usually tertiary or quaternary consumers. why don’t we have many 5th, 6th, or 7th level consumers?

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:

it's not c. i took the quiz and got it wrong. so my best guess is b.

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