To test for the keystone species hypothesis, the wolves in another region can be removed or trees can be reintroduced to see the effect on the ecosystem.
<h3>What is a keystone species?</h3>
A keystone species is an organism whose existence defines an entire ecosystem such that them, the ecosystem would be severely affected or may not exist.
Trophic cascades are events which result in serious distortions in an ecosystem as a result of the removal or addition of a top predator.
To test for the hypothesis of keystone species and trophic cascades, the wolves in another region can be removed or trees can be reintroduced to see the effect on the ecosystem.
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Answer:
II and II only
Explanation:
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The answer is; Carbon dioxide levels in the Earth’s atmosphere have been steadily increasing.
Data has shown a direct relationship between the increase in the levels of carbon dioxide in the atmosphere and rising global temperatures. The rise in the global temperatures can be observed through the melting of Arctic and Antarctic glaciers, the rise in ocean levels, and extreme weather events.
The answer is terracing.
Terracing is a type of landscaping characteristic for steep slopes and mountains. Graduated terraces are used to farm on this kind of terrain to reduce erosion. This way crops are planted on graduated level areas and not on steep terrain, and risk of surface runoff is reduced.