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nekit [7.7K]
3 years ago
10

Explain the difference between descriptive and experimental research

Biology
1 answer:
Sever21 [200]3 years ago
7 0

Answer:

The main difference between descriptive and experimental research is that descriptive research describes the characteristics of the research subject while the experimental research manipulates the research subject or the variables to come to a conclusion.

Explanation:

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Which of the following scenarios represents change to an ecosystem brought about by biotic factors?
Maru [420]

Answer:

C. A Landslide Caused By Cattle Overgrazing

Explanation:

This is the only scenario that represents a biotic factor. All other options are caused by natural disasters.

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3 years ago
Which tool is most likely used to produce a clear image of very tiny structures inside a cell?
Oksanka [162]
Depends on the magnification you are looking for... usually, a light microscope is enough (1000x max magnification)...

An electron microscope is powered by high energy beams and can magnify many times higher than the light microscope (where magnification is limited by the wavelength of light). The magnification of an EM is on the nano scale.

(P.S.: as a chemist, I'd always choose an EM over an optical microscope as I can always zoom in or out depending on my needs) ;)
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3 years ago
Select all the correct answers. What were the main points of Wegener's hypothesis about continental drift? All pieces of land on
son4ous [18]

Answer:

All pieces of land on Earth were once joined together.

Earth's surface is covered with continental plates.

All the continents are moving at a slow pace.​

Explanation:

According to the Wegener, at first all continents are fuse together make a  supercontinent which later broke apart into seven large masses of land. All the continents are moving away from each other at very slow rate. The surface of earth is covered with continental plates that is responsible for the breaking and movement of continents from each other.

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Scientists find the fossilized remains of a fish in the middle rock layers of a research site. They find the fossil of an insect
Neporo4naja [7]
It is A I think the insect lived first and so it is under because it is under a different layer so if they were around at the same time and the fish was just under water it would be in the same layer of rock but because it is different rock it was not around at the same time
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3 years ago
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