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High School Environmental Science Fundamentals

Environmental Science

A foundational quiz covering key concepts in environmental science including ecology, atmosphere, and sustainability.

science ecology sustainability
12 Questions Easy Ages 14+ Apr 2, 2026

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About this Study Set

This study set covers Environmental Science through 12 practice questions. A foundational quiz covering key concepts in environmental science including ecology, atmosphere, and sustainability. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 12 questions from the High School Environmental Science Fundamentals study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which gas makes up the highest percentage of Earth's atmosphere?
  • A Oxygen
  • B Carbon dioxide
  • C Nitrogen
  • D Argon
2 What is the primary source of energy for almost all ecosystems on Earth?
  • A Geothermal heat
  • B Solar radiation
  • C Wind power
  • D Tidal energy
3 Which layer of the atmosphere contains the ozone layer that protects us from UV radiation?
  • A Troposphere
  • B Stratosphere
  • C Mesosphere
  • D Thermosphere
4 What term describes the variety of all living organisms in a specific area?
  • A Biomass
  • B Biodiversity
  • C Population density
  • D Succession
5 Which of the following is considered a non-renewable energy source?
  • A Solar
  • B Wind
  • C Coal
  • D Geothermal
6 What process do plants use to convert sunlight into chemical energy?
  • A Respiration
  • B Transpiration
  • C Photosynthesis
  • D Decomposition
7 Which biome is characterized by low rainfall and extreme temperature fluctuations?
  • A Desert
  • B Tropical Rainforest
  • C Tundra
  • D Temperate Forest
8 What is the main byproduct of burning fossil fuels that contributes to the greenhouse effect?
  • A Oxygen
  • B Carbon dioxide
  • C Nitrogen
  • D Hydrogen
9 Which of the following represents an abiotic factor in an ecosystem?
  • A Fungi
  • B Bacteria
  • C Sunlight
  • D Plants
10 What is the process where water moves from the Earth's surface into the atmosphere as vapor?
  • A Precipitation
  • B Condensation
  • C Evaporation
  • D Infiltration
11 Which level of the food chain consists of organisms that consume other organisms?
  • A Producers
  • B Decomposers
  • C Consumers
  • D Autotrophs
12 What is the primary cause of ocean acidification?
  • A Increased oil spills
  • B Absorption of excess carbon dioxide
  • C Overfishing
  • D Plastic pollution
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