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PtichkaEL [24]
3 years ago
9

Before a star is born, the matter that will become the star exists as a

Biology
2 answers:
Ivahew [28]3 years ago
8 0
High density Nebula, And condenses into a huge  globule of gas and dust and contracts under its own gravity
Neporo4naja [7]3 years ago
6 0

It would be a cool, dark Nebula. :)

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Choose one the correct types of weathering and type it in the box exactly as it is written!
WITCHER [35]

Answer:

1st picture: water

2nd picture: wind

3rd picture: ice wedging

4th picture: exfoliation

5th picture: oxidation

6th picture: plant root

7th picture: animal

8th picture: acid rain

9th picture: abrasion

Explanation:

Hope this helps

7 0
2 years ago
Read 2 more answers
In two or three well-developed paragraphs, explain how pollution can come from both natural sources and from human activities. P
spayn [35]

Pollution can come from both natural sources and human activities depending on the type of pollutant.

<h3>What is pollution?</h3>

It is the release of substances into the environment to the extent that the well-being of plants, animals, and humans starts getting affected.

Substances that are released into the environment to the extent that they start affecting the organisms in the environment negatively are known as pollutants.

Pollutants can come from natural sources or as a result of human activities.

For example pollutants such as oxides of sulfur, methane, carbon dioxide, etc. can come from natural processes such as volcanic eruptions, activities of microbes, etc.

Pollutants such as oxides of carbon and sulfur can also be generated as a result of human activities such as the burning of coal, technological inventions, etc.

More on pollution can be found here: brainly.com/question/23857736

#SPJ1

8 0
2 years ago
What tools do field study scientists use and what tools do laboratory scientists?
pochemuha

Answer:

Explanation:

Each of these types of scientists focus on different research studies and therefore needs different tools. Field Scientists' studies mainly revolve around observations which they, therefore, need only a pen and paper, this may sometimes change when they need bigger machinery to make a certain event occur, but this machinery is dependent on the type of research. On the other hand laboratory, scientists work with different specimens within the lab and tend to use tools such as Bunsen burner, beakers, reagent bottles, petri dishes, and microscopes.

8 0
3 years ago
Before scientists learned how to make artificial fertilizers, what key process limited the amount of nitrates available to plant
zavuch27 [327]
I believe rottening would be the answer. Rotting, dead plants and animal feaces make great fertilizers. 
6 0
3 years ago
Plants in the ______ are succulent because they need to hold as store a lot of moisture
Yakvenalex [24]

Answer:

Plants in the desert are succulent because they need to hold as store a lot of moisture

4 0
3 years ago
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