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loris [4]
4 years ago
9

What percentage of all living things that have ever existed on

Biology
2 answers:
Ratling [72]4 years ago
8 0

D. 99% of all living things that have ever existed are now extinct

prisoha [69]4 years ago
5 0

<u>Answer:</u>

The correct answer option is d. 99 percent.

<u>Explanation:</u>

Extinction is the term used for the termination of any organism or of a group of organisms which are commonly called as species.

Death of organisms or a species results in their extinction. Out of all over five billion species that have ever existed on the earth, about 99 percent have already gone extinct.

While the current number of species that exist on earth have reduced to a range of 10 million to 12 million.

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3 years ago
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Gnesinka [82]

Answer: pancreas- secretes enzymes

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3 years ago
Which of the following is the best description of the events occuring during anaphase I of meiosis?
mote1985 [20]

Answer:

The best description of the events occurring during Ana-phase I of meiosis:

c. Homologous chromosomes randomly separate and migrate to opposite poles.

Explanation:

Meiosis:

It is such type of cell division that occur in animals, plants resulting in four daughter cells and each of daughter cell have the half number of chromosomes from the parent cell.

  • Anaphase is one of important phases of meiosis. The option a is incorrect as chromosomes go randomly to opposite poles.
  • The option b is incorrect as all of chromosomes inherited from mother and father goes randomly to opposite poles.
  • The option c is correct as it is the true description of anaphase I of meiosis.
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5 0
4 years ago
. Rain washing away soil from a hillside is an example of.... *
jeyben [28]

Answer:

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Explanation:

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