Question

question 4 of 10
how are carbon dioxide emissions affecting earths natural cycle of temperature change?
a. temperatures are becoming higher than expected.
b. temperatures are staying at about the same levels.
c. temperatures are becoming cooler than expected.
d. temperatures are moving towards those of the last ice age.

Explanation:

Carbon dioxide is a greenhouse gas. When there is an increase in carbon dioxide emissions (due to human activities like burning fossil fuels), more heat is trapped in the Earth's atmosphere. This leads to a phenomenon called global warming. As a result, the Earth's average temperature is rising at a rate that is higher than what would be expected in its natural cycle (without significant human - induced greenhouse gas emissions). Options B (temperatures staying the same) and D (temperatures becoming cooler) are incorrect because of the known warming effect of increased greenhouse gases. Option C (temperatures moving towards ice - age levels) is also wrong as ice - age temperatures are much cooler than current temperatures and the trend is in the opposite direction due to increased carbon dioxide emissions.

Answer:

A. Temperatures are becoming higher than expected.