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Showing posts with label Environment. Show all posts
Showing posts with label Environment. Show all posts

Factors Threatening The Environment: Population Growth

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Human population growth is at the root of virtually all of the world’s environmental problems. Although the growth rate of the world’s popul...

Factors Threatening The Environment: Global Warming

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Like the glass panes in a greenhouse, certain gases in the Earth’s atmosphere permit the Sun’s radiation to heat Earth. At the same time, t...

Factors Threatening The Environment: Depletion of the Ozone Layer

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The ozone layer, a thin band in the stratosphere (layer of the upper atmosphere), serves to shield Earth from the Sun’s harmful ultraviolet...

Factors Threatening The Environment: Habitat Destruction and Species Extinction

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Plant and animal species are dying out at an unprecedented rate (see Endangered Species ). Estimates range that from 4,000 to as many as 50,...

Factors Threatening The Environment: Air Pollution

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A significant portion of industry and transportation burns fossil fuels, such as gasoline . When these fuels burn, chemicals and particulate...

Factors Threatening The Environment: Water Pollution

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Estimates suggest that nearly 1.5 billion people worldwide lack safe drinking water and that at least 5 million deaths per year can be attri...

Factors Threatening The Environment: Groundwater Depletion and Contamination

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Water that collects beneath the ground is called groundwater . Worldwide, groundwater is 40 times more abundant than fresh water in streams ...

Factors Threatening The Environment: Chemical Risks

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A number of toxic substances that humans encounter regularly may pose serious health risks. Pesticide residues on vegetable crops, mercury ...

Factors Threatening The Environment: Environmental Racism

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Studies have shown that not all individuals are equally exposed to pollution. For example, worldwide toxic-waste sites are more prevalent in...

Factors Threatening The Environment: Energy Production

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The limited supply of fossil fuels, coupled with their contributions to global warming, air pollution, and acid rain, makes it clear that al...

Environment: Future Prospects

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Global environmental collapse is not inevitable. But the developed world must work with the developing world to ensure that new industrializ...

Efforts To Protect The Environment

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Most scientists agree that if pollution and other environmental deterrents continue at their present rates, the result will be irreversible ...

Factors Threatening The Environment

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The problems facing the environment are vast and diverse. Global warming, the depletion of the ozone layer in the atmosphere, and destructio...

Understanding The Environment

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The science of ecology attempts to explain why plants and animals live where they do and why their populations are the sizes they are. Under...

Environment

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Environment, all of the external factors affecting an organism. These factors may be other living organisms (biotic factors) or nonliving va...