Approximately what percentage of the world\'s extinct species became extinct bef

Question

Approximately what percentage of the world's extinct species became extinct before humans appeared on earth?

1 percent

10 percent

20 percent

more than 99 percent

The merit standard refers to:

"To each according to her need."

"To each according to her productivity."

"To each according to his ability."

"To each exactly the same."

1 percent

10 percent

20 percent

more than 99 percent

The merit standard refers to:

"To each according to her need."

"To each according to her productivity."

"To each according to his ability."

"To each exactly the same."

Explanation / Answer

Merit standard is refers to some thing which is based on talent. SO in this question.

The merit standard refers to "To each according to his ability."

First answer is actually more than 99%. But actually still 86% of living species are yet not discovered. So no number can be said surely.

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