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Environmental Science Basics

Environmental Science

Test your knowledge of fundamental environmental science concepts.

environment ecology sustainability science

8 Questions Easy Ages 5+ Apr 21, 2026

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About this Study Set

This study set covers Environmental Science through 8 practice questions. Test your knowledge of fundamental environmental science concepts. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 8 questions from the Environmental Science Basics study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the primary source of energy for most ecosystems on Earth?

A The Moon
B The Sun
C Geothermal activity
D Fossil fuels

2 Which gas is most abundant in Earth's atmosphere?

A Oxygen
B Carbon Dioxide
C Nitrogen
D Argon

3 What process do plants use to convert light energy into chemical energy?

A Respiration
B Transpiration
C Photosynthesis
D Decomposition

4 Which of the following is a renewable resource?

A Coal
B Natural gas
C Solar energy
D Petroleum

5 What is the term for the variety of life in a particular habitat or ecosystem?

A Evolution
B Biodiversity
C Genetics
D Mutation

6 What layer of Earth's atmosphere protects us from harmful ultraviolet (UV) radiation from the sun?

A Troposphere
B Stratosphere
C Mesosphere
D Thermosphere

7 What is the natural process by which dead organic matter is broken down?

A Combustion
B Fermentation
C Decomposition
D Evaporation

8 Which major gas do humans exhale, which is also a greenhouse gas?

A Oxygen
B Nitrogen
C Methane
D Carbon Dioxide

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