A change in the sequence of nitrogen
bases in a gene is called a(n)

mutation

Explanation:

A mutation is a change that occurs in copying a DNA sequence where the order of the proteins could be altered.

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: