About this Study Set
This study set covers Environmental Science through
25 practice questions.
A collection of essential facts covering ecology, atmospheric science, and natural resources. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 25 questions from the
Fundamentals of Environmental Science study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which gas makes up the largest percentage of Earth's atmosphere?
-
A
Oxygen
-
B
Nitrogen
-
C
Carbon dioxide
-
D
Argon
2
What is the primary source of energy for Earth's climate system?
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A
Geothermal heat
-
B
The Moon
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C
The Sun
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D
Tidal forces
3
Which layer of the atmosphere contains the ozone layer that protects life from UV radiation?
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A
Troposphere
-
B
Stratosphere
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C
Mesosphere
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D
Thermosphere
4
What is the process by which green plants convert light energy into chemical energy?
-
A
Respiration
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B
Transpiration
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C
Photosynthesis
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D
Decomposition
5
Which of these is considered a non-renewable natural resource?
-
A
Solar energy
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B
Wind energy
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C
Coal
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D
Moving water
6
What is the main component of Earth's hydrosphere?
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A
Glacial ice
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B
Groundwater
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C
Oceans
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D
Rivers
7
Which biome is characterized by very low precipitation and extreme temperature fluctuations?
-
A
Desert
-
B
Tropical rainforest
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C
Tundra
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D
Grassland
8
What term describes the variety of all living organisms on Earth?
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A
Ecosystem
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B
Biodiversity
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C
Biosphere
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D
Taxonomy
9
Which gas is primarily released during the combustion of fossil fuels and is linked to global warming?
-
A
Nitrogen
-
B
Oxygen
-
C
Carbon dioxide
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D
Helium
10
What part of the water cycle involves water turning from liquid to vapor due to heat?
-
A
Precipitation
-
B
Condensation
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C
Evaporation
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D
Infiltration
11
Which soil layer contains the most organic matter and nutrients?
-
A
Topsoil
-
B
Bedrock
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C
Subsoil
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D
Parent material
12
What is the term for an animal that eats only plants?
-
A
Carnivore
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B
Omnivore
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C
Herbivore
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D
Detritivore
13
Which natural disaster is caused by the movement of tectonic plates?
-
A
Hurricane
-
B
Earthquake
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C
Drought
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D
Blizzard
14
What is the primary cause of rising sea levels in recent decades?
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A
Increase in rainfall
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B
Melting of land-based ice and thermal expansion
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C
Increase in underwater volcanic activity
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D
Decrease in ocean salt content
15
Which of these organisms is a primary producer in a marine food web?
-
A
Phytoplankton
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B
Shark
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C
Sea turtle
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D
Jellyfish
16
What type of rock is formed from cooling magma or lava?
-
A
Sedimentary
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B
Metamorphic
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C
Igneous
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D
Limestone
17
Which element is essential for all known forms of life and is the basis of organic chemistry?
-
A
Carbon
-
B
Iron
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C
Gold
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D
Neon
18
What is the main role of decomposers in an ecosystem?
-
A
To produce oxygen
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B
To break down dead organic matter
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C
To hunt small mammals
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D
To pollinate flowers
19
Which biome is known as the 'lungs of the planet' due to its high oxygen production?
-
A
Tropical rainforest
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B
Savanna
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C
Taiga
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D
Chaparral
20
What is the measure of the acidity or alkalinity of a substance?
-
A
Celsius
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B
pH scale
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C
Richter scale
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D
Decibel
21
Which renewable energy source harnesses the power of moving air?
-
A
Solar
-
B
Geothermal
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C
Wind
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D
Biomass
22
What is the term for the specific environment where an organism lives?
-
A
Niche
-
B
Habitat
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C
Community
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D
Population
23
Which greenhouse gas is produced by livestock during digestion?
-
A
Methane
-
B
Oxygen
-
C
Nitrogen
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D
Argon
24
What is the name of the area where freshwater from rivers meets saltwater from the ocean?
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A
Estuary
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B
Tributary
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C
Aquifer
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D
Watershed
25
Which layer of the Earth is located directly beneath the crust?
-
A
Inner core
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B
Outer core
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C
Mantle
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D
Lithosphere
