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. It encompasses the diversity of species within a habitat, area, or ecosystem.
Step 2
Give one use of peat taken from peat bogs.
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Answer
Peat can be used as compost or fertilizer to help grow crops and improve soil texture.
Step 3
Explain why the use of peat is harmful to the environment.
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Answer
The decay or burning of peat releases carbon dioxide into the atmosphere, which is increasing global warming. Additionally, extracting peat disrupts local ecosystems and can lead to significant habitat loss.
Step 4
Suggest two ways that this type of farming can damage the environment.
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Intensive farming can lead to soil erosion as nutrients are removed faster than they can be replenished.
The use of large farm machinery can cause soil compaction, leading to reduced water infiltration and increased runoff.
Step 5
Explain how the widespread use of antibiotics in farming is a threat to human life.
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Antibiotics are often passed into the environment through animal waste, which can contaminate water sources. This results in the development of antibiotic-resistant bacteria. These resistant strains can enter human populations, leading to illnesses that cannot be effectively treated with standard antibiotics, posing a significant health risk.
