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VLD [36.1K]
3 years ago
12

Help!!! Earth Space Science important quiz so i can move on!!! Im stuck on 7 questions!!!

Biology
1 answer:
Illusion [34]3 years ago
3 0

Outer core is the answer - Appex

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Why are some diseases more common in certain groups of people, such as caucasians or African Americans
Anna71 [15]

Answer:

Some diseases are more common in certain groups of people, such as Caucasians or African Americans because individuals in such ethnic groups often share certain alleles (versions of their genes), that have been passed down to them from common ancestors and a particular genetic disorder may be more frequently seen in such groups if one of these shared genes contains a disease-causing mutation.

Explanation:

Some genetic diseases are frequently seen in certain ethnic groups like Caucasians or African Americans. Individuals in such groups often share certain alleles (versions of their genes), that have been passed down to them from common ancestors and one of these shared genes may contains a disease-causing mutation.

Examples of certain genetic disorders that are more common in particular ethnic groups include the Tay-Sachs disease, which is more common in people of eastern and central Europe (Ashkenazi), Jewish or French Canadian ancestry and the sickle cell disease, which occur among people of African, African American, or Mediterranean heritage.

Some genetic disorders are more common in people whose ancestry can be traced to a particular geographic area. The factors that can lead to development of populations with very different genetic allele frequencies include their geographic origin, selection, patterns of migration, historic events, etc. Certain natural barriers like oceans and other water bodies, high mountains, large deserts, or major cultural factors had prevented communication and interaction between people. So mating was restricted within the group, and this produces genetic marker differences and differences in the presence of specific disease-related alleles.

6 0
3 years ago
What is the difference between a cell wall and a cell membrane
kicyunya [14]
The cell wall is the outside layer of the cell whereas the cell membrane is surrounds the cytoplasm of the cell.
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What do the many overlapping food chains in an ecosystem makeup?
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The food chains make up the food webs
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Why can't we just kill invasive species?
snow_tiger [21]

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we would have to kill ourselves cause were invasive

Explanation:

6 0
2 years ago
I NEED HELP WITH ALL QUESTOONS PLEASE
Ulleksa [173]

Answer:

3) B

4) A

5) B

Explanation:

3) Sun heats up the air of a particular region due to which the air heated rises up ( as hot air is lighter than cool air ). When the hot sir rises , the cool air from other region comes there & like this wind blow.

4) A toaster uses electricity to produce heat in order to toast bread  So here the electric energy is converted to thermal energy.

5) Windmills , Hydroelectricity dams & Ethanol plants have turbines & turbines do have a generator which is to be rotated . When the generator is rotated , electricity is generated.

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3 years ago
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