Causes of Environmental Change
Biology: AQA GCSE Higher, topic 7.2.4
Causes of Environmental Changes
Environmental changes can come about for many different reasons, including:
Seasons
- Many countries have rainy and dry seasons.
- The difference in temperature between winter and summer drives birds on worldwide migrations.
Humans
- Through the burning of fossil fuels, humans increase the atmospheric concentration of greenhouse gases.
- People can change water availability through the building of large dams. The pollution of water sources can make them toxic to wildlife.
Geological activity
- Volcanic eruptions change the composition of atmospheric gases.
- Storms and droughts change the availability of water.
Test yourself on Causes of Environmental Change
What is an example of a human cause of environmental change, rather than a geological one?
Which of these describes how humans change the availability of water in the environment?
What would most likely happen to bird migrations if there were no difference in temperature between winter and summer?
Which statement correctly compares the causes of changes in water availability?
Which statement correctly compares the causes of changes in atmospheric gases?