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ValentinkaMS [17]
3 years ago
8

What layer of the earth is solid and rocky?

Biology
1 answer:
podryga [215]3 years ago
6 0
The mantle is made of a solid rocky substance.
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Theory or law that explains something about nature
RUDIKE [14]

According to natural law moral theory, the moral standards that govern human behavior are, in some sense, objectively derived from the nature of human beings and the nature of the world. While being logically independent of natural law legal theory, the two theories intersect.

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3 years ago
Coal is considered a nonrenewable resource.<br><br>A) TRUE<br><br>B) FALSE
notka56 [123]

Answer:

true

Explanation:

Coal is a non-renewable energy source because it takes millions of years to form.

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Why is cytoplasm like jelly
Ganezh [65]
it divides organelles so don't they run into each other
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4 0
3 years ago
You’ve likely heard of polar bears (Ursus maritimus) and grizzly bears (Ursus arctos horribilis). Have you heard of a grolar bea
Karolina [17]

Answer:

allopatric speciation.

Explanation:

  • When the population belonging to the same biological species becomes separated from each other due to some geographical factor such that no gene flow can occur between the two separated populations then the speciation that occurs on account of this is known as allopatric speciation.
  • The geographical isolation that separates the two groups can be the origin of a mountain,  the formation of islands, volcanic eruption, etc. which prevents the two groups fro mating with each other and ultimately causes their lineage to speciate.
  • Although the two separate populations are unable to mate due to geographical factors, if the two populations are allowed to mate again, given that they have not been separated very long ago, they can give rise to hybrids.
  • Thus, in the given question it is given that polar bears and grizzly bears have been mated and hybrids have been produced and this points out to the fact that polar bears are result of allopatric speciation.
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3 years ago
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