Question

The average temperature of Earth's surface has increased approximately 1°C in the

past century. Which of the following can BEST explain this increase in temperature?
O higher levels of oxygen in the atmosphere
O lower levels of nitrogen in the atmosphere
O higher levels of carbon dioxide in the atmosphere
O lower levels of ozone in the atmosphere

Answer 1

The increase in average temperature of Earth's surface can be best explained by the higher levels of carbon dioxide in the atmosphere.

Step-by-step explanation:

The BEST explanation for the increase in average temperature of Earth's surface in the past century is the higher levels of carbon dioxide in the atmosphere. Carbon dioxide is a greenhouse gas that traps heat from the sun, causing the temperature to rise. Increased levels of carbon dioxide, primarily due to human activities such as burning fossil fuels, have led to an enhanced greenhouse effect and global warming.

For instance, the burning of fossil fuels like coal, oil, and natural gas releases large amounts of carbon dioxide into the atmosphere. This excess carbon dioxide accumulates and traps more heat, leading to a rise in global temperatures.

In contrast, the other options mentioned in the question do not directly influence the Earth's average temperature. Higher levels of oxygen, lower levels of nitrogen, and lower levels of ozone do not have a significant impact on global warming.

Learn more about global warming