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Tresset [83]
3 years ago
8

Human skin comes in a variety of

Biology
1 answer:
topjm [15]3 years ago
7 0

Answer:

Based on everything that you have learned so far, provide an explanation for how the different shades of skin color from pinkish white to dark brown evolved throughout human history. Darker skin colors evolved because they provided increased fitness in early human populations living in equatorial Africa.

Explanation:

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Which Properties Of Water Contribute To The Formation Of The Meniscus? Select All That Apply. Check All That Apply High Heat Of
Vladimir79 [104]

The properties of water that contribute To The formation of the meniscus are:

  • cohesion and
  • adhesion

Meniscus is defined as the upward or downward curve located at the surface of a liquid in a tube.

When water is placed in a tube or wettable container, a concave or downward meniscus is formed due to surface tension created in water through the following properties of water:

  • Cohesion: This is the tendency of water molecules to stick to itself.

  • Adhesion: This is the tendency of water molecules to stick to other molecules that are charged or polar.

Therefore, the cohesion and adhesion of water molecules contributes to the formation of meniscus.

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brainly.com/question/13437383

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2 years ago
huntington's disease is an incurable, progressive nerve disorder. symptoms of tbe disease generally appear between the ages 30 a
nevsk [136]
This would depend on if the other parents has it or not. If they do not, they have a 50/50 chance that the trait will become recessive. That said, it could still be passed on to the child's kids in later generations.
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3 years ago
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Which of the following is an example of parasitism.
sesenic [268]
The correct answer is C
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3 years ago
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What is mixed-acid fermentation? how is methyl red used to determine if a microbe has undergone mixed-acid fermentation?
Vika [28.1K]

Mixed Acid Fermentation is a biological process by which a six carbon sugar is converted into complex mixture of acids. It is an example of anaerobic fermentation reaction which is commonly seen in bacteria.

The fermentation produces lactate, acetate, succinate, formate, ethanol, H_{2} and CO_{2} and their formation depends upon the presence of certain key enzymes in the bacterium.

The Methyl Red test is used in detecting occurring of mixed acid fermentation pathway when glucose is provided to microbes by using ph indicator. If the fermentation pathway has taken place, the mixture of acids will make the solution very acidic and causes red color change. The Methyl Red test belongs to the group called as IMViC tests.

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3 0
1 year ago
Scientific explanation that explains how oxygen and carbon dioxide travel within a seed
Xelga [282]

Answer:

The two membranes pull apart a little and create a small pocket or sack of air. As the developing bird grows, it breathes in oxygen from the air sack and exhales carbon dioxide. Several thousand microscopic pores all over the surface of the egg allow the CO2 to escape and fresh air to get in.

Explanation:

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