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Rom4ik [11]
3 years ago
12

PLEASE HELP!!! Which of the following is created when the sun pushes the ionized gases of a comet away from the central core?

Biology
2 answers:
Svetach [21]3 years ago
8 0

Answer:

Plasma tail

Explanation:

A comet is a body in space which revolves around Sun in elliptical orbit. It is composed of rocks, dust, ice and frozen gases. A comet has mainly three parts:

Nucleus- It is the core of the comet which is solid.

As the comet nears the sun, the frozen gases start sublimating. An atmosphere surrounds the nucleus which is known as coma.

As the comet approaches the sun closely, the coma extends backwards due to solar wind. The solar wind pushes the ionized gases of the comet away from the nucleus. This is known as tail. There are two tails - dust tail and  plasma tail. Plasma tail is composed of ionized gases -heavier than the dust tail and thus lies below it.

Strike441 [17]3 years ago
3 0
The correct answer is C. Plasma Tail.
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Which of the following components is involved in the initiation of transcription?
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Answer:

Promoter.

Explanation:

Transcription may be defined as the process of generation of the RNA molecule from the DNA template. The process of transcription includes initiation, elongation and termination.

Promoter may be defined as the region of DNA that are located in the upstream region. The initiation of transcription requires the promoter region that allows the binding of RNA polymerase at the initiation site.

Thus, the correct answer is option (3).

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During replication when there's one old old stand of DNA, is called?
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stem cells of plants have an unusual tubular structure unlike most other types of plant cells. What function of plant stem cells
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The function of plant stem cells that is related to their shape and structure is: D) Transport.
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3 years ago
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Explain the role of nitrifying bacteria and denitrifying bacteria during nitrogen cycle
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4 0
3 years ago
You are an almond grower and want to determine whether almond size (measured as shelled almond weight) is a heritable trait. A s
inn [45]

Answer: 1. S = 0.77

              2. R = 0.14

Explanation:

1. <u><em>Selection</em></u> <u><em>differential</em></u> is the difference between the population mean and the average of the selected parents. Its symbol is S.

S = mean of selected parents - population mean

S = 6.48 - 5.71

S = 0.77

2. <em><u>Response</u></em> <em><u>to</u></em> <em><u>Selection</u></em> is how much gain you make when crossing over selected parents. Its symbol is R.

R = mean of offspring of selected parents - population mean

R = 5.85 - 5.71

R = 0.14

3. <em><u>Heritability</u></em> is, basically, a statistical variable that shows how much the variation in a trait is due to genetic factors. Its symbol is h².

To calculate it, use Breeder's Equation:

R = h²S

h^{2}=\frac{R}{S}

h^{2}=\frac{0.14}{0.77}

h² = 0.18

4. You would expect the production to be strongly influenced by environment, because heritability lies between 0 and 1. Low heritability means there is low level of resemblance between offspring and parents. As this program heritability is low, the resemblance is small, which means the characteristics are influenced mostly by the enviroment.

7 0
3 years ago
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