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Inga [223]
3 years ago
9

He peppered moth provides a well-known example of natural selection. the light-colored form of the moth was predominant in engla

nd before the industrial revolution. in the mid-nineteenth century, a dark-colored form appeared. the difference is produced by a dominant allele of one gene. by about 1900, approximately 90% of the moths around industrial areas were dark colored, whereas light-colored moths were still abundant elsewhere. apparently, birds could readily find the light moths against the soot-darkened backgroun
Biology
2 answers:
erica [24]3 years ago
8 0

A. Dark moths had a survival disadvantage in industrial Dorset.

mixas84 [53]3 years ago
5 0
The reason for the loss of color after the industrial revolution is that the light-colored moths were "selected against" by predators. These birds could only see the light ones against the newly dark, sooted background. Over time, these predators could no longer distinguish the dark ones from their natural dark, sooted background. Thus more light-colored moths stood out against the dark soot, and were eaten. And more dark-colored moths eluded the birds, survived to reproduce, passing on more of their dominant genes for dark color to their offspring. After several decades of hundreds of thousands of generations, most of the later generations were dark, due to selective advantage of camouflage to survive predation.
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Maurinko [17]

Answer:

A balance of bodily fluids will prevent the development of diseases, the deterioration of body organs, and death of animals.

Explanation:

Water, blood, saliva, sweat and other body fluids should be kept constant and balanced through homeostasis because the sharp rise and fall of these fluids will prevent the organs of the body from operating optimally and this can lead to the development of diseases and consequent death. For example, water is a vital fluid. Too much of water in the system can lead to diseases like Edema where the legs begins to swell because there is no way of letting out body fluids from the body.

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3 years ago
In 6-8 sentences, explain how stream volume and speed affect the size, shape, and
ki77a [65]

Answer:

Stream volume and speed directly affects the size, shape, and  flow of streams and rivers.

Explanation:

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it important to know a person's rhesus factor before a blood transfusion? A patient who is Rh+ can receive only Rh– blood. A pat
timofeeve [1]

The right answer is A patient who is Rh– can receive only Rh– blood.

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The blood transfusions can be "iso-rhesus", that is to say between Rh + and Rh- but only in one sense: Rh- can give to Rh + but Rh + can not give to Rh-. Again because of the presence of antibodies directed against the antigen in Rh- people.

4 0
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k0ka [10]

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http://eden-foundation.org/project/desertif.html

https://www.sciencedaily.com/releases/2017/03/170314111320.htm


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