Biology

Isaiah Tanner

21 October, 06:21

An increased greenhouse effect and the depletion of the ozone layer are two examples of

OA. processes that have positive effects on all organisms on Earth.

OB.

processes triggered by human activities that have impacted the natural balance of the Earth's atmosphere.

c.

naturally occurring processes that have caused changes in the atmosphere during the past century.

OD. processes that have no effect on the atmosphere.