Answer:
hat is the cause of global warming, the gradual increase in global temperatures being observed today?
A. tectonic activity, especially the collision of the Indian and Asian plates
B. decreasing levels of nitrogen and oxygen in the atmosphere
C. a shift in ocean currents, such as the Gulf Stream
D. increasing levels of carbon dioxide and other greenhouse gases
Step-by-step explanation:
The Answer is D. increasing levels of carbon dioxide and other greenhouse gases
Carbon dioxide is a greenhouse gas, meaning it helps trap heat within Earth’s atmosphere. Because humans have been burning fossil fuels, carbon dioxide levels have been rising over the past 200 years. Global warming is the result.