SCIENCE
ECOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Volcano wipes out ecosystem that gradually grows back from ash covered soil
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Volcano creates a new island of rock that must break down to form an ecosystem
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Forest fire burns down forest that must bounce back over time
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Tornado destroys a crop that must slowly grow back over time.
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Detailed explanation-1: -Primary succession occurs in an area with no life and no soil but secondary succession happens in an area where an existing community was disrupted. Which of the following best describes succession? The changes in species composition in a community over time as species colonize an area.
Detailed explanation-2: -Primary succession occurs after a volcanic eruption or earthquake; it involves the breakdown of rocks by lichens to create new, nutrient-rich soils. The first species to colonize an area after a major disturbance are called pioneer species; they help to form the new environment.
Detailed explanation-3: -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-4: -Primary succession is the process in which plants and animals first colonize a barren habitat. On a newly created volcanic island, for example, after the rock cools, seeds blown by the wind may lodge in crevices. There they can germinate and take root.