ECOLOGY
ECOLOGICAL SUCCESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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loosen the dirt for new trees to take roots?
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provide food for animals returning to the area
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require plenty of sunlight to make their own food
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can grow even in areas with shallow soil
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Detailed explanation-1: -In the process of ecological succession, grasses appear before shrubs because grasses-loosen the dirt for new trees to take root.
Detailed explanation-2: -Simple species that can tolerate the often-harsh environment become established first. These organisms help enrich the soil, allowing other species to become established. The first organisms to appear in areas of primary succession are often mosses or lichens.
Detailed explanation-3: -Primary succession is ecological succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life (because of recent lava flows, newly formed sand dunes, or rocks left from a retreating glacier).
Detailed explanation-4: -The main causes of ecological succession include the biotic and climatic factors that can destroy the populations of an area. Wind, fire, soil erosion and natural disasters include climatic factors.
Detailed explanation-5: -Ecological succession is the process by which the mix of species and habitat in an area changes over time. Gradually, these communities replace one another until a “climax community”-like a mature forest-is reached, or until a disturbance, like a fire, occurs. Ecological succession is a fundamental concept in ecology.