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mina [271]
3 years ago
15

Why do scientists use a light year to measure distances in space?Do you think there is a better way to measure distance? Explain

why or why not.
Biology
1 answer:
leva [86]3 years ago
6 0
Scientists use the light year because nothing can travel fast than light. Therefore, in any given time frame, light will travel farther than any other substance or particle in the universe. For more precise measurements, scientists use astronomical units. One AU is equal to the distance between the earth and the sun. For anything less, scientists usually use kilometers. For extremely large, interstellar distances, light years are very useful. You wouldn’t want to measure the distance between Earth and Proxima Centauri in kilometers or even AU. The lightyear gives a simple, relative measurement.
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.In the cladogram above, which pair of species is most closely related to each other? * 2 points a. Hamster and salamander b. Li
denis23 [38]

Answer:

b. Lizard and salamander

Explanation:

Both Lizard and salamander are closely related species because of their body structure and appearance. Both Lizard and salamander have similar shape and structure but belongs to different group. Lizard belongs to reptiles whereas salamander belongs to amphibian family. Both Lizard and salamander are vertebrates, cold blooded animals, carnivorous, has a tail and four legs. So we can conclude that both Lizard and salamander are closely related to each other.

6 0
3 years ago
Describe accurately the the basement membrane which underlies epithelial tissues
Nady [450]

Answer:

The basement membrane or basal lamina on which the epithelium form, made by extracellular matrix.

Explanation:

The basement membrane is the layer underlies all epithelia that is made up extracellular matrix secreted by the epithelium cells that provide structural support to the structure of epithelia.

It forms the barrier between epithelial tissues therefore once a epithelial cancer penetrate this basement membrane it will spread to all underlying tissues.

Thus, the correct answer is - The basement membrane or basal lamina on which the epithelium form, made by extracellular matrix.

The basement membrane is form of extracellular matrix that underlies all epithelia. It provides structural support to epithelia and forms a mechanical connection between epithelia and underlying connective tissue.

The basement membrane, or basal lamina, is a sheet of proteins and other substances to which epithelial cells adhere and that forms a barrier between tissues.

Epithelial cancers may have the ability to penetrate through the basement membrane and spread to underlying tissues.

8 0
3 years ago
Does a prokaryotic cell or a eukaryotic cell seem more simple? Explain our answer.​
dedylja [7]

Answer:

prokaryotic

Explanation:

I think that because since it doesn't have a nucleus or as many organelles as eukaryotic. They are smaller in size and don't have membrane bound structures.

6 0
3 years ago
How many elements have been found to occur in nature?<br> 90<br> 092<br> 96<br> 99
wel

Answer:

92

Explanation:

5 0
3 years ago
Read 2 more answers
How does a single cell function
olganol [36]

Answer:

They obtain nutrients, producing energy, and making proteins

Explanation:

7 0
3 years ago
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