GROWTH DEVELOPMENT CHILD
FORMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is a Mass Extinction?
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One species goes extinct.
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A large percentage of species go extinct in a short period of time.
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The natural, gradual extinction of species over time.
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Several species go extinct in one ecosystem.
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Explanation:
Detailed explanation-1: -A mass extinction is a short period of geological time in which a high percentage of biodiversity, or distinct species-bacteria, fungi, plants, mammals, birds, reptiles, amphibians, fish, invertebrates-dies out.
Detailed explanation-2: -These are called mass extinctions, when huge numbers of species disappear in a relatively short period of time. Paleontologists know about these extinctions from remains of organisms with durable skeletons that fossilized.
Detailed explanation-3: -In a mass extinction at least 75% of species go extinct within a relatively (by geological standard) short period of time. Typically less than two million years.
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