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leva [86]
3 years ago
9

Why are distances between planets, stars, and solar systems measured in light-years?

Biology
1 answer:
sertanlavr [38]3 years ago
7 0
Because the galaxy is so huge, astronomers had to come up with a unit of measurement able to convey such incredible distance.
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The theory of evolution
zloy xaker [14]
The theory of evolution<span> by natural selection, first formulated in Darwin's book "On the Origin of Species" in 1859, is the process by which organisms change over time as a result of changes in heritable physical or behavioral traits.</span>
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3 years ago
The Rolling Plains ecoregion lies west of the Crosstimbers area of Texas and at elevations between 900-4000 ft. The Rolling Plai
Simora [160]

Answer: plateaus

Explanation: there not canyons so you can cross that off and its not the dunes nor the deltas so if you look at the picture you can tell it is the plateaus

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3 years ago
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What are two things that parasites can do?
Neko [114]

Answer:

Parasites are organisms that infect the body of another living being and live off their hosts to survive. While some parasites create no symptoms in their hosts, others can cause severe illness. Parasitic infections occur when parasites grow, reproduce, or invade organ systems that make their hosts ill.

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4 years ago
How do animals transport materials?
hodyreva [135]

Answer:

Thought the process of discussion and ossmossis as due to gaseous exchange

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With the aid of thin layers and large surface area animal are able to transport material thought the blood due to diffusion and osmosis In order to transport different materials from a every of high concentration to a low concentration until material is equally distributed throughout the body

3 0
3 years ago
Using what you know about the term mosaic, write a paragraph describing another biological mosaic
alexdok [17]

The fluid-mosaic model describes the plasma membrane of animal cells. The plasma membrane that surrounds these cells has two layers (a bilayer) of phospholipids (fats with phosphorous attached), which at body temperature are like vegetable oil (fluid). And the structure of the plasma membrane supports the old saying, “Oil and water don’t mix.”

Each phospholipid molecule has a head that is attracted to water (hydrophilic: hydro = water; philic = loving) and a tail that repels water (hydrophobic: hydro = water; phobic = fearing). Both layers of the plasma membrane have the hydrophilic heads pointing toward the outside; the hydrophobic tails form the inside of the bilayer.

Because cells reside in a watery solution (extracellular fluid), and they contain a watery solution inside of them (cytoplasm), the plasma membrane forms a circle around each cell so that the water-loving heads are in contact with the fluid, and the water-fearing tails are protected on the inside.



3 0
4 years ago
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