Question 1 Medium
Name one way of protecting biodiversity.
Show answer
Answer: breeding programmes
- People can protect species.
- Breeding programmes are one.
Biodiversity and human impact on the environment: GCSE Combined Science Biology practice questions
A second set of questions on biodiversity and human impact on the environment. They are different from the ones on the topic page. Try each, then open the answer and compare your working.
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Question 2 Medium
What rises when the polar ice caps melt?
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Answer: sea level
- Water from ice goes into the sea.
- Sea level rises.
Question 3 Medium
What name is given to rubbish buried in the ground?
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Answer: landfill
- Waste is dumped and covered with soil.
- This is landfill.
Question 4 Medium
Name the strips of wild plants that farmers leave around the edges of fields to help wildlife.
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Answer: field margins
- These are habitats at the edge of a field.
- They are field margins.
Question 5 Hard
Why does fertiliser in a river cause fish to die? Give the gas that is used up.
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Answer: oxygen
- Algae die and decompose.
- The decomposers use up oxygen.
Question 6 Hard
Name one effect of global warming on a species.
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Answer: changes in distribution
- Species need the right conditions.
- Their distribution may change.
Question 7 Hard
Why does burning forest increase global warming? Give the greenhouse gas.
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Answer: carbon dioxide
- Burning releases stored carbon.
- It is carbon dioxide.
Question 8 Hard
Give one reason why a country may not reduce deforestation.
Show answer
Answer: it needs land for farming
- The land is used for crops and cattle.
- It may need the land for farming.
Quick checks
Short questions with options. Choose one before you open the answer.
Check 1
What is biodiversity?
Show answer
The variety of all the different species in an area or on Earth.
Check 2
Why is biodiversity important?
Show answer
It makes ecosystems stable and provides food, medicines and materials.
Check 3
Name three types of pollution.
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Water, air and land pollution.
Check 4
What causes acid rain?
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Sulfur dioxide in the air.
Check 5
What is deforestation?
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The removal of large areas of forest.
Check 6
Give two reasons for deforestation.
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Land for cattle and rice fields, and crops for biofuels.
Check 7
Why is peat important?
Show answer
It stores carbon, and peat bogs are habitats.
Check 8
Why does burning peat harm the climate?
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It releases carbon dioxide.
Check 9
Name two greenhouse gases.
Show answer
Carbon dioxide and methane.
Check 10
What is global warming?
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A rise in the average temperature of the Earth, caused by more greenhouse gases.
Check 11
Name two effects of global warming.
Show answer
Rising sea levels and changes in species distribution.
Check 12
What is the main cause of species loss?
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Habitat destruction.
Check 13
Name two ways to maintain biodiversity.
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Breeding programmes and protecting habitats.
Check 14
What are hedgerows and field margins?
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Strips of habitat left for wildlife on farms.
Check 15
Why is recycling helpful?
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It reduces waste, and reduces the use of landfill.
Check 16
Why might a scheme to protect biodiversity be hard to carry out?
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It can be costly or conflict with economic needs.
Check 17
What is a species?
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One type of living thing.
Check 18
What is an ecosystem?
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All the living things in an area, together with the place they live in.
Check 19
What is pollution?
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Harmful substances in the environment.
Check 20
What does extinct mean?
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No individuals of the species are left alive.
Check 21
What is landfill?
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Rubbish buried in the ground.
Check 22
What is a biofuel?
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A fuel made from plants.
Check 23
How does fertiliser in a river kill fish?
Show answer
Algae grow fast and die, and decomposers use up the oxygen in the water.
Check 24
How do greenhouse gases keep the Earth warm?
Show answer
They trap thermal energy from the Sun in the atmosphere.
Keep going with Biodiversity and human impact on the environment
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