Question

1. go look at the graph here. how can we describe the data represented in the graph? a. there is an overall decrease in the amount of carbon dioxide in the atmosphere over the last 140 years b. carbon dioxide emissions have increase, but global temperature has decreased c. the rate of carbon dioxide concentration has increased in the last few decades d. time is the dependent variable on the graph

Explanation:

In reality, over the last few decades, the rate of carbon - dioxide concentration in the atmosphere has been increasing due to human activities like burning of fossil fuels. Option a is incorrect as there has been an overall increase, not decrease, in carbon - dioxide over the last 140 years. Option b is incorrect because generally, as carbon - dioxide emissions increase, global temperature also increases due to the greenhouse effect. Option d is incorrect as time is usually the independent variable on a graph.

Answer:

c. the rate of carbon dioxide concentration has increased in the last few decades