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patriot [66]
3 years ago
11

How do scientists know that dark matter and dark energy exist even if we can not see them

Biology
1 answer:
Gre4nikov [31]3 years ago
7 0

Answer:

We only know it's there because we can see the effect of its gravity. Scientists study dark matter by looking at the effects it has on visible objects. Scientists believe that dark matter may account for the unexplained motions of stars within galaxies. Computers play an important role in the search for dark matter information.

Explanation:

Hope That helps!

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Which statement can be best supported by the fossil record
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Many organisms that lived in the past are now extinct .

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What organelle is huge in plant cell but small in Animal cell
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Population growth is:
kow [346]

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Population growth is the increase in the number of people in a population. Global human population growth amounts to around 83 million annually, or 1.1% per year. The global population has grown from 1 billion in 1800 to 7.9 billion in 2020. ... A popular estimate of sustainable population is 8 billion people.

Explanation:

4 0
2 years ago
12 If pressure is applied to a rock until its volume is
mote1985 [20]

Answer: The correct answer to the question is option 2

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Density is directly proportional to Pressure,so when pressure increases, Density increases and when pressure decreases,density decreases.

Density is indirectly or inversely proportional to temperature. so when pressure and density increases, temperature remains constant.

This is applicable to the scenerio with the rock in the question,as the pressure on the rock is increasing,the density is increasing too.

7 0
3 years ago
Read 2 more answers
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