Grade 8 Module Test Study Guide - Earth and Human Activity

Front

What happens to populations when birth rates are higher than death rates?

Back

Populations increase.

Front

True or False: As the human population increases, more species go extinct.

Back

True

Front

List one way a 13-year-old in America can help control greenhouse gases.

Back

Planting trees, turning off electronics, riding bikes, walking, or recycling.

Front

What gas, when increased in the atmosphere, can lead to climate changes?

Back

Carbon dioxide.

Front

What are two disadvantages of deforestation?

Back

Increase of CO2 in the atmosphere and loss of animal habitat.

Front

Define deforestation.

Back

The clearing or thinning of forests by humans.

Front

What is the greenhouse effect?

Back

The warming of Earth’s surface due to trapped heat from greenhouse gases.

Front

Name a consequence of increased carbon dioxide levels in the atmosphere.

Back

Climate change.

Front

What is one way to reduce carbon footprints?

Back

Using public transportation instead of cars.

Front

What role do trees play in the environment?

Back

They absorb CO2 and release oxygen.