SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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by destroying too many trees in a forest
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by bringing in harmful plants and/or animals
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by using pesticides
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by studying plants and animals
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Detailed explanation-1: -Natural Disturbances Natural causes such as a volcano, flood, or an earthquake can upset the balance of an ecosystem. These disturbances destroy organism and their habitats.
Detailed explanation-2: -Impacts from human activity on land and in the water can influence ecosystems profoundly. Climate change, ocean acidification, permafrost melting, habitat loss, eutrophication, stormwater runoff, air pollution, contaminants, and invasive species are among many problems facing ecosystems.
Detailed explanation-3: -Some examples include the mining of natural resources like coal, the hunting and fishing of animals for food, and the clearing of forests for urbanization and wood use. Extensive overuse of nonrenewable resources, like fossil fuels, can cause great harm to the environment.
Detailed explanation-4: -Taking steps to reduce or eliminate pollution from nonpoint sources such as streets and farms will help to maintain the ecological balance. Sewage and run-off of agricultural fertilizer can cause the rapid growth of algae in lakes and streams.