Question

Solar radiation travels through the earth's atmosphere and warms the planet's surface. Greenhouse gases like carbon dioxide in the earth's atmosphere reabsorb the heat and warm the planet. The amounts of greenhouse gases have been increasing over the past century, causing the earth's surface temperature to increase. This gradual temperature change is thought to have many negative environmental consequences.

Which of these might be a POSITIVE effect of the increase in carbon dioxide levels?
A) rise in sea levels
B) decrease in plant growth
C) increase in plant growth
D) increased melting of ice caps

Answer 1

the correct answer is c} increase in plant growth.

Answer 2

Among the given choices, the only positive effect that may be thought off with the increase in level of CO2 in the atmosphere is the increase of plant growth. Carbon dioxide is an essential compound in the photosynthesis of plants. Therefore, the answer should be letter C.