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Climate Change Causes & Effects (Human Activity (Human activites are…
Climate Change
Causes & Effects
Orbital Changes
The way the earth moves around the sun .
These changes affect the amount of solar radiation the earth receives. if the earth receives more energy, it gets warmer.
Orbital changes may have caused the glacial and inter glacial cycles of the Quaternary period.
Volcanic Activity
Major volcanic eruptions eject large quantities of material into the atmosphere.
Some of these particle reflect the suns rays back out to space, so the earths surface cools down because less heat it getting to it.
Volcanoes also release carbon dioxide but not enough to cause global warming.
Volcanic activity may cause short-term changes in climate.
Solar Output
The suns output of energy isn't constant.
Periods when solar output is reduced may cause the earths climate to change.
Most scientists think that changes in solar output don't have a major effect on global climate change.
Human Activity
Human activites are causing global warming by making the greenhouse gasses stronger.
Burning fossil fulls
Farming
Cement Production
Deforestation.
Environmental Effects
Warmer temperatures cause things to melt and ice caps shrink causing rising sea levels that are putting things in danger.
Also some coral reefs are suffering from bleaching.
Precipitation patterns are changing
Effects on People
Deaths due to heat are increasing, deaths due to clod decreasing.
Hot and dry is causing some places to be uninhabitable. Migration and over crowding of other places.
Areas of drought make it hard to supply water to residents and also its hard to be able to maintain crops without water so the area will get less food.