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zhannawk [14.2K]
3 years ago
15

After its formation, Earth was extremely hot. Which of these contributed to the cooling of Earth?

Biology
1 answer:
MariettaO [177]3 years ago
6 0

Answer:

The answer is D

Explanation:

When absorbed energy is released back into space, Earth cools. Many factors, both natural and human, can cause changes in Earth's energy balance, including: Variations in the sun's energy reaching Earth. Changes in the reflectivity of Earth's atmosphere and surface.

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there are multiple chickens and rabbits in a cage there are 72 heads and 200 feet inside of the cage how many chickens are in th
schepotkina [342]
The answer is 44 chickens and 28 rabbits.

We have a system of two equations.
x - the number of rabbits
y - the number of chickens

Both chicken and rabbit have only 1 head, so the first equation is: x + y = 72.
Since rabbits have 4 legs and chickens 2 legs, the second equation is: 4x + 2y = 200.

Now, let's solve the system:
x + y = 72
4x + 2y = 200
___________
y = 72 - x
⇒ 4x + 2 · (72 - x) = 200
4x + 2 · 72 - 2 · x = 200
4x + 144 - 2x = 200
2x + 144 = 200
2x = 200 - 144
2x = 56
⇒ x = 56 ÷ 2 = 28
So, there are 28 rabbits.

Since
y = 72 - x = 72 - 28 = 44,
there are 44 chickens.

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3 years ago
What are facts about embryonic stem cell research?
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Derived from the inner cells of a human blastocysts , a very early human embryo.
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Way an egg is so much larger then a sperm cell, need help.
Dmitry_Shevchenko [17]

Answer:

The egg contains both food and mitochondria in addition to its vital DNA, thats why it is much larger. The sperm cell has to be much smaller than the egg cell, because it is the one that swims. If a sperm cell were as big as an egg, it would not be able to move very fast nor very far.

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Which of these is an example of an achieved status? a. African American b. daughter c. adolescent d. husband
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Which of these is an example of an achieved status? d. husband

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A puffball fungus is a type of ___fungus
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