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GalinKa [24]
3 years ago
8

What does permafrost mean?

Social Studies
2 answers:
Maksim231197 [3]3 years ago
8 0

The correct answer is C. The lower layer under the ground is permanently frozen

Explanation:

"Permafrost" is a term used to refer to a lower layer under the ground in some biomes that is permanently frozen or has a temperature under 0°C, this involves the formation of ice in some cases. Additionally, permafrost is common in biomes such as the tundra that are located at high elevations or near the poles where the temperature is quite low. Besides this, the existence of permafrost creates conditions under which only specific species of animals and plants can survive. According to this, permafrost means that the lower layer under the ground is permanently frozen.

Alik [6]3 years ago
5 0
C. The lower layer under the ground is permanently frozen
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Proponents of the ____________ model claim that humans evolved in Africa, and that some populations migrated to other parts of t
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recent African origin (RAO)

Explanation:

The recent African origin (RAO) models claims that all Homo Sapiens living today are the descendants of the humans which migrated from Africa.

This means that the first Homo Sapiens were born in Africa and later migrated to rest of the world. The other hominims were not as adaptable to the environment compared to Homo Sapiens and they died out.

Even though there was interbreeding among different hominims Homo Sapiens are the only surviving animals belonging to the Homo genus.

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3 years ago
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Her employer may see she is reliable and hire her in the fall, helping her save more for college.

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4 years ago
According to cynthia scott and dennis jaffe's stages of coping with change in an organization, at the first stage of the cycle,
aleksklad [387]

According to Cynthia Scott and Dennis Jaffe's stages of coping with change in an organization, at the first stage of the cycle, individuals' interests are not threatened.

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2 years ago
In the 2018 election, House of Representatives incumbency rates were at 91% while Senate incumbency rates were at 84%. Why is
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A) House members have less voters to appeal to so they are harder to defeat than Senators.

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3 years ago
Why is it impossible from an individual to inherit a recessive condition if only one parent is a carrier for that condition
Jobisdone [24]
I added a picture of a badly-drawn cross as an example to help me explain. Let's say h is the recessive allele, in this case, that would cause a recessive condition. The heterozygous Hh parent is the carrier and they are being crossed with a homozygous dominant HH parent.

As you can see, all of the children are either homozygous dominants HH or heterozygous carriers Hh. None of the children can be homozygous recessive hh because there is not a recessive allele h to inherit from the other parent. Because H is dominant over h, the recessive condition won't be displayed.

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3 years ago
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