Question

How are the changes in atmospheric carbon dioxide described?

a. Carbon dioxide levels have remained the same.
b. Carbon dioxide levels cannot be measured.
c. Carbon dioxide levels have increased.
d. Carbon dioxide levels have decreased.

Answer 1

c. Carbon dioxide levels have increased.

Just took this test a little bit ago got it right

have a grate day.

Answer 2

C) Carbon dioxide levels have been increasing in the atmosphere.