There is a need to grow enough food for all the people in the world - AQA - GCSE Biology Combined Science - Question 3 - 2020 - Paper 2
Question 3
There is a need to grow enough food for all the people in the world.
Growing enough food affects habitats and biodiversity.
What is meant by the term biodiversity?... show full transcript
Worked Solution & Example Answer:There is a need to grow enough food for all the people in the world - AQA - GCSE Biology Combined Science - Question 3 - 2020 - Paper 2
Step 1
What is meant by the term biodiversity?
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Answer
Biodiversity refers to the variety of all the different species of organisms on Earth. This includes the variety of species in a specific habitat or ecosystem.
Step 2
Give one use of peat taken from peat bogs.
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Answer
One use of peat taken from peat bogs is as a compost or fertiliser which helps to improve soil texture and grow crops.
Step 3
Explain why the use of peat is harmful to the environment.
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Answer
The use of peat is harmful because its decay or burning releases carbon dioxide into the atmosphere, which increases global warming. Additionally, the extraction of peat can lead to habitat destruction.
Step 4
Suggest two ways that this type of farming can damage the environment.
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Intensive farming leads to soil erosion as crops are harvested; this removes minerals from the soil.
The use of fertilizers may pollute waterways and lakes, which can harm aquatic ecosystems.
Step 5
Explain how the widespread use of antibiotics in farming is a threat to human life.
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Answer
The widespread use of antibiotics in farming allows antibiotics to enter the environment through animal waste, contaminating water supplies. This can lead to the development of antibiotic-resistant bacteria, which pose a serious health risk as they can cause diseases that are difficult to treat in humans.
