Natural Resources-Human Impact

Front

What are greenhouse gases?

Back

Greenhouse gases are gases in the Earth's atmosphere that trap heat. They include carbon dioxide, methane, nitrous oxide, and water vapor.

Front

True or False: Some greenhouse gases are naturally present in the Earth's atmosphere.

Back

True

Front

What is the main reason for the increase in Earth's average temperature over the past century?

Back

Higher levels of carbon dioxide in the atmosphere.

Front

Which greenhouse gas, when reduced, would have the greatest impact on slowing global warming?

Back

Carbon dioxide.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

Front

What is a renewable resource?

Back

A renewable resource is a natural resource that can be replenished naturally over time, such as solar energy, wind energy, and hydroelectric power.

Front

Which of the following is a renewable energy source?

Back

Hydroelectric.

Front

What is the impact of deforestation on carbon dioxide levels?

Back

Deforestation increases carbon dioxide levels in the atmosphere because fewer trees are available to absorb CO2.

Front

What role do plants play in reducing carbon dioxide?

Back

Plants absorb carbon dioxide during photosynthesis, helping to reduce its concentration in the atmosphere.

Front

What is global warming?

Back

Global warming refers to the long-term increase in Earth's average surface temperature due to human activities, primarily the emission of greenhouse gases.