Environmental Science Essentials

Environmental Science

Test your knowledge on key environmental science concepts including ecosystems, atmospheric chemistry, and conservation.

environment ecology earth-science sustainability

4 Questions Medium Ages 13+ Oct 17, 2026

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About this Study Set

This study set covers Environmental Science through 4 practice questions. Test your knowledge on key environmental science concepts including ecosystems, atmospheric chemistry, and conservation. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 4 questions from the Environmental Science Essentials study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which chemical compounds were primarily responsible for causing the depletion of Earth's ozone layer in the 20th century?

A Chlorofluorocarbons (CFCs)
B Carbon monoxide (CO)
C Sulfur dioxide (SO2)
D Nitrogen dioxide (NO2)

2 When excess carbon dioxide from the atmosphere dissolves into ocean water, which acid is formed?

A Sulfuric acid
B Carbonic acid
C Nitric acid
D Hydrochloric acid

3 In an ecological energy pyramid, approximately what percentage of energy is transferred from one trophic level to the next higher level?

A 10%
B 50%
C 75%
D 90%

4 Excess amounts of which two nutrients in agricultural runoff are the primary cause of freshwater eutrophication and algal blooms?

A Nitrogen and phosphorus
B Calcium and potassium
C Iron and magnesium
D Sodium and chlorine

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