OBJECTIVE LIFE SCIENCE
DIVERSITY AMONG LIFE FORMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is true about extinction?
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No animals currently living on Earth will become extinct
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Most species that have lived on Earth are now extinct
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fossil record doesn’t give clues which lifeforms are extinct
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Little is known about all extinct organisms.
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Explanation:
Detailed explanation-1: -Regardless, scientists agree that today’s extinction rate is hundreds, or even thousands, of times higher than the natural baseline rate. Judging from the fossil record, the baseline extinction rate is about one species per every one million species per year.
Detailed explanation-2: -Species endangerment and extinction have three major anthropogenic causes-overhunting or overharvesting; introduction of nonnative species, including the spread of disease; and habitat degradation or loss.
There is 1 question to complete.