FORESTRY
ECOLOGY AND ENVIRONMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Altered ecosystems regain stability through the evolution of new plant species.
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Destroyed environments can recover as a result of the process of ecological succession.
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Geographic barriers prevent the migration of animals to island habitats.
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Destroyed ecosystems always return to their original state.
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Detailed explanation-1: -Today the island looks much as it did before the eruption. Which statement is the best possible explanation for this? Destroyed environments can recover as a result of the process of ecological succession.
Detailed explanation-2: -Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time. For example, primary succession may take place following the eruption of volcanoes, such as those on the Big Island of Hawaii.
Detailed explanation-3: -Answer and Explanation: The correct answer is c. lichens. Lichens are most likely to be pioneer species in a newly formed volcanic island.
Detailed explanation-4: -Plants are destroyed over a wide area, during an eruption. The good thing is that volcanic soil is very rich, so once everything cools off, plants can make a big comeback! Livestock and other mammals have been killed by lava flows, pyroclastic flows, tephra falls, atmospheric effects, gases, and tsunami.