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stealth61 [152]
3 years ago
12

A student explains the formation of the planetary system as follows.

Biology
1 answer:
Galina-37 [17]3 years ago
4 0
<span>A. The nebula contracts and shrinks instead of expanding

</span><span>Nebula is the cloud of interstellar dust and gas that forms a star. It is collborately shaped during colliding and collapsing of the interstellar mediums this is influenced by the gravitational attraction of the atoms and particles in the entites. Hence, there are three types of nebular namely, are classical nebula, diffuse nebula, planetary nebular and supernova remnants.</span>
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Function of plasma membrane​
Yuki888 [10]

Answer:

The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

3 0
3 years ago
a species is a group of organisms capable of mating and producing offspring . this is another way of saying that a species is __
kow [346]
A species is a group of organisms capable of mating and producing offspring. This is another way of saying that a species is reproductively isolated.
6 0
3 years ago
Compound X is used as an energy source in respiration.<br> Suggest the name of compound X.
DedPeter [7]

Answer:

Glucose

Explanation:

After reading the overview of cellular respiration, the primary or initial fuel of respiration should be clear - it's glucose, which is the molecule of sugar that plants create for animals (as well as the plant itself) to utilize as an energy source.

Hope this helps!! Brainliest?? Anyways have a great day!!

5 0
2 years ago
When mixed with water, phospholipids spontaneously form membranes because they ______?
andrew11 [14]
It is because they have hydrophilic phosphate groups that are attracted to water and hydrophobic fatty acid tails that avoid water. 

Hope this helps!
3 0
3 years ago
A __________ is the amount of light given off by a light source from a certain angle that is perceived by the human eye.
mihalych1998 [28]

Answer:

Lumen

Explanation:

Luminous flux is known as the power of light perceived by the eye. The SI unit of luminous flux is known as lumen where one lumen is the amount of luminous flux emitted from a directional unit point source through a unit solid angle.

Since the human eye can see only the visible spectrum of light which is perceived in the form of luminous flux and thus lumen.

Thus, the lumen is the correct answer.

8 0
4 years ago
Read 2 more answers
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