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Len [333]
3 years ago
14

Which type of rock was the first to exist on the planet?

Biology
1 answer:
timurjin [86]3 years ago
4 0

Answer:

B- sedimentary

Explanation:

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The sedimentation coefficient:
chubhunter [2.5K]

Answer:

option D is incorrect

Explanation:

the sedimentation coefficient is measured in Svedberg units named after the scientist Theodore Svedberg. the shape of the particle being measured in the ultracentrifuge is one of the factors that determines the sedimentation coefficient. the values are usually not additive as the sedimentation coefficient is based on the rate at which a particle sediments in an ultracentrifuge and not on the size. for example, the sedimentation coefficient of eukaryotic ribosome is 80S but is made up of the 60S large subunit and the 40S small subunit.

8 0
3 years ago
"one shift in activation that occurs as children develop is from diffuse, larger areas to more focal, smaller areas. this shift
IceJOKER [234]
The answer would be synaptic pruning.

The brain in children will have a much more synaptic connection than adults. This connection is important for learning process in the early stage of life. More synaptic connections allow multiple parts the brain areas to be connected even if there is a damage in one area. 
The synapse will be cut down later in a process called synaptic pruning. Only the area that frequently used will be preserved.
3 0
3 years ago
Which of the following is a type of adaptation that animals can have?
Brrunno [24]
I believe it would be number 4
6 0
3 years ago
What role do smooth muscle cells perform in a human body?
ss7ja [257]

Answer:

heart contraction

Explanation:

because smooth muscle helps in hea

rt contraction

7 0
3 years ago
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A geyser is a place where
lorasvet [3.4K]
The answer is hot springs intermittently erupt jets of hot water and steam

ex: Old Faithful in Yellowstone

hope this helps!

-Blaze
8 0
3 years ago
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