Human activity and the Enviroment
- Created by: alexda
- Created on: 05-05-14 18:28
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- Human activity and the Enviroment
- The population of the world is increasing due to the development of modern medicine as it has stopped the widespread death from disease.
- The development of agriculture has also helped because it is now easier to provide food for such high population.
- To meet the high demand for food sources farmers add fertilisers to their crops to encourage growth. If the nitrates or phosphates in fertilisers wash into a lake or stream it can result in eutrophication (over enrichment) and the death of wildlife.
- More pollutants are being produced: phosophates (e.g. from detergents), nitrates (e.g. from fertilisers) and sulfur dioxide (e.g. burning fossil fuels).
- 1. Excess nitrate washes into river causing rapid growth of algae.
- 2. Some plants start dying due to competition for life.
- 3. Microbe numbers increase as they feed on the dead animals.
- 4. Microbes use up all the oxygen. Fish and other aquatic animals suffocate.
- 3. Microbe numbers increase as they feed on the dead animals.
- 2. Some plants start dying due to competition for life.
- To meet the high demand for food sources farmers add fertilisers to their crops to encourage growth. If the nitrates or phosphates in fertilisers wash into a lake or stream it can result in eutrophication (over enrichment) and the death of wildlife.
- The development of agriculture has also helped because it is now easier to provide food for such high population.
- A larger population affects the environment more:
- More waste is being produced
- More pollutants are being produced: phosophates (e.g. from detergents), nitrates (e.g. from fertilisers) and sulfur dioxide (e.g. burning fossil fuels).
- Raw materials including non-renewable energy resources are rapidly being used up.
- The population of the world is increasing due to the development of modern medicine as it has stopped the widespread death from disease.
- To meet the high demand for food sources farmers add fertilisers to their crops to encourage growth. If the nitrates or phosphates in fertilisers wash into a lake or stream it can result in eutrophication (over enrichment) and the death of wildlife.
- 1. Excess nitrate washes into river causing rapid growth of algae.
- 2. Some plants start dying due to competition for life.
- 3. Microbe numbers increase as they feed on the dead animals.
- 4. Microbes use up all the oxygen. Fish and other aquatic animals suffocate.
- 3. Microbe numbers increase as they feed on the dead animals.
- 2. Some plants start dying due to competition for life.
- 1. Excess nitrate washes into river causing rapid growth of algae.
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