How Humans Influence the Living World

Unit 9: The Living Environment

Human activity can upset the balance of ecosystems, leading to the decline of many species.
Extinction is a fact of life, but the current rate of the loss of species is accelerating, due largely to activity to three main factors.
pollution can have devastating effects on animals high on the food chain due to biological .
Atmospheric pollution includes (CFCs), which can deplete the layer.
The burning of fossil fuels releases dioxide into the atmosphere, leading to global due to the effect.
- Burning of coal releases into the atmosphere, causing precipitation.
Alternative sources of energy include power, solar and wind energy, and fuels such as ethanol.
The root of environmental problems is the rapid growth of the population.
Future population growth rates can be assessed by a population .
The impact of human activity on the environment can be estimated by the footprint.
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May 4, 2012 Print