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LoE - Human Impact
Life on Earth - Topic 5 - Human Impact on the Environment
Question | Answer |
---|---|
What type of farming involves using chemicals such as pesticides and fertilisers? | Intensive farming |
What alternative to intensive farming involves inserting a useful gene into another species? | Genetic modification |
What alternative to intensive farming involves introducing a predator or disease to control a pest population? | Biological control |
Describe an advantage of intensive farming. | Increases crop yield |
Describe a disadvantage of using fertilisers. | Causes algae bloom |
Does algae bloom increase or decrease the number of bacteria found in the water? | Increase |
Does algae bloom increase or decrease the level of oxygen in the water? | Decrease |
What chemical in fertilisers help plants grow? | Nitrate |
Describe a disadvantage of using pesticides. | They build up in the food chain and become toxic to the top predator |