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zysi [14]
2 years ago
7

Before a star is born, the matter that will become the star exists as a what?

Biology
1 answer:
Svetach [21]2 years ago
5 0

Answer:

A: Cool, Dark Nebula

Explanation:

Before a star is born, the matter that will become the star exists as a interstellar gas and dust.  The stars are formed as a result of the force of gravity compresses atoms in the interstellar gas. Then the fusion reaction begins. During this fusion reaction the temperature gets extremely high and all the material evolves into a hot bright star.

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How do plate tectonics explain the formation and metamorphic rocks?
Serga [27]

Metamorphic rocks are formed from other rock that has been subjected to very high temperature and pressure.

When one of the earth's plates comes in contact with another either by both traveling opposite directions, straight into each other, or from one slipping under the other (subduction zone), the pressure/friction of the plates against each other melts the rocks and after they cool they are metamorphic. Example is in Washington state when the Juan de fuca plate is going under the North American plate the pressure/friction of this melts the rocks which then form metmorphic rock.

4 0
3 years ago
Is a sunken walkway in a garden called a furrow?
Art [367]

Answer:

no

Explanation:

a furrow is a trench dug by a plow or (insert word for the name of a garden tool that looks like a naughty word) for planting seeds or to carry water for irrigation.

4 0
2 years ago
Prokaryotic and Eukaryotic Cells Lab Report
Anon25 [30]

Answer:

to do this we need to know the question

Explanation:

7 0
3 years ago
If a DNA molecule is found to be composed of 35% thymine, what percentage of cytosine would be expected, and why?
-Dominant- [34]
We use Chargaff's rule to get the answer. [A] + [G] = [C]+ [T].    [A] + [G] + [C] + [T] = 100% Where is A is Adenine, G is Gaunine, T is Thymine and C is Cytosine. In DNA, Adenine always pairs with Thymine, and Guanine always pairs with Cytosine. Therefore if Thymine is 35%, then Adenine will also be 35% to make 70% in total. The remaining percentage will be 100% - 70% = 30%. The 30% will be shared equally among Cytosine and Guanine, at 15% each. Therefore Cytosine will be 15% 
4 0
3 years ago
Plz help me well mark brainliest if correct!!.....
Elza [17]

Answer:

Those are all incorrect

Explanation:

Vertebrate has back bone

Invertebrate has none

4 0
2 years ago
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