Pollution Practice Questions

Front

What percentage of the Earth's water is salt water?

Back

About 97% of the water on Earth is salt water.

Front

What happens when excess nutrients enter waterways?

Back

Algal blooms increase.

Front

What are some uses for food waste?

Back

Food waste can be used for composting, animal feed, and community gardens.

Front

What is runoff in the context of pollution?

Back

Runoff washes agricultural wastes, including animal wastes, fertilizers, and pesticides, into bodies of water.

Front

What is smog?

Back

Smog is air pollution from burning fossil fuels and can look like a yellow haze over a city.

Front

What is the main source of air pollution?

Back

Burning fossil fuels and trash are significant sources of air pollution.

Front

What is the impact of algal blooms on aquatic ecosystems?

Back

Algal blooms can deplete oxygen in the water, harming fish and other aquatic life.

Front

What is composting?

Back

Composting is the process of recycling organic waste into a nutrient-rich soil amendment.

Front

What are the effects of agricultural runoff on water quality?

Back

Agricultural runoff can lead to nutrient pollution, harming aquatic ecosystems and drinking water quality.

Front

What is the ozone layer?

Back

The ozone layer is a region of Earth's stratosphere that absorbs most of the Sun's harmful ultraviolet radiation.