Question

How can various factors influence the use of science to solve the problem of ecosystems being healthy and balanced?

Answer 1

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• The use of genetic modified organisms, or GMOs, has played an important role in increasing crop yields so we can feed our populations. In addition to providing better crop yields, modified plants are better able to resist disease
• A balanced ecosystem requires the sustainable interdependence of plants, animals and other organisms with non-living factors in the environment. Healthy ecosystems maintain efficient energy cycling
• Wind, rain, predation and earthquakes are all examples of natural processes which impact an ecosystem. Humans also affect ecosystems by reducing habitat, over-hunting, broadcasting pesticides or fertilizers, and other influences.

Answer 2

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• Some earth and atmospheric scientists have been documenting an increased concentration of carbon dioxide and other "greenhouse gases" in the atmosphere and have been attempting to better understand how a continuing accumulation will affect the future world climate Others have been studying.

• Many of the most readily identified causes of these changes are human activities.

• Major contributors to the accumulation of greenhouse gases in the atmosphere include the burning of fossil fuels for heating and energy generation and the use of chlorofluorocarbons (CFCs) as coolants and aerosols.

• The burning of fossil fuels is also a major cause of acid rain, which is formed when airborne sulfur dioxide and nitrogen oxides combine with water vapor.

• Air pollutants include ozone, carbon monoxide, lead, sulfur dioxide, nitrogen dioxide, and particulates—all by-products of industrial and energy-generation processes. Stratospheric ozone thinning is believed to be a direct consequence of the accumulation of CFCs in the upper atmosphere.