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 diversity within species, between species, and of ecosystems.
Step 2
Give one use of peat taken from peat bogs.
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Answer
Peat is commonly used as a compost or fertilizer, helping to improve soil texture for growing crops.
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, contributing to global warming. Peat bog destruction also disrupts natural habitats, leading to further ecological consequences.
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 crops are continuously harvested.
The use of fertilizers can pollute local waterways, harming aquatic ecosystems.
Step 5
Explain how the widespread use of antibiotics in farming is a threat to human life.
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Antibiotics used in farming can enter the environment through animal waste. This can lead to the development of antibiotic-resistant bacteria. When these bacteria enter human populations, they may cause diseases that are difficult to treat because they no longer respond to conventional antibiotics.
