Answer number 7 please

Fewer.

Explanation:

The more helpful bacteria, the less room for harmful bacteria. there would have to be less helpful bacteria in order for more harmful bacteria to enter and cause the higher infection rate.

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: