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TEA [102]
3 years ago
14

What's the earliest mass extinction on record

Advanced Placement (AP)
2 answers:
e-lub [12.9K]3 years ago
6 0
End Ordovician, 444 million years ago, 86% of species lost
— Graptolite 2-3 cm length
earnstyle [38]3 years ago
5 0
Ithe earliest mass extinction on record is critters
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. At a given water/cement ratio, a change in the cement content or aggregate grading can be made to
Lesechka [4]

Answer:

It reduces strength.

Explanation:

It not desirable to produce concrete mixtures of a higher  consistency than normal because the strength of the concrete decreases. Consistency plays an important role in the determination of strength of concrete. Less water than normal quantity in concrete increases the consistency but decreases strength due to incomplete chemical reaction while on the other hand, adding more water would increase water-cement ratio and reduces consistency as well as  strength of the concrete so that's why necessary amount of water and cement should be added to get higher strength.

3 0
3 years ago
How has the development of agricultural technologies
zlopas [31]

Answer:

C. Increased food production has supported larger workforces in the manufacturing and service sectors.

Explanation:

I received a 90% on this test, and it seems the most feasible option.

Every other answer for the test is in the .txt file attached to this answer :)

DATE ANSWERED: 5/12/2021

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3 years ago
Which sentence should be part of the technical description of a billiard ball?
nadya68 [22]

Answer:

1. A billiard ball is designated as a cue ball when it is used to strike the other balls on the table.

Explanation:

That's what a billiard ball is used for

8 0
2 years ago
If all chlorine and bromine from human sources were eliminated from the stratosphere, which statement would be correct?
Naily [24]

The statement that would be correct is that Current total chlorine would decrease by half.

<h3>What is the presence of chlorine and bromine in the stratosphere?</h3>

The both in the stratosphere leads to Ozone Depletion this is because if chlorine and bromine atoms unit with ozone in the stratosphere, they tend to destroy ozone molecules.

Hence, The statement that would be correct is that Current total chlorine would decrease by half as it is the most valuable options among them.

Learn more about bromine from

brainly.com/question/23894494

#SPJ1

8 0
2 years ago
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Elias needs to practice the piano, but instead he sends over 100 texts to his friends. This is an example of
Effectus [21]
Getting distracted should be the answer
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3 years ago
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