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gulaghasi [49]
3 years ago
15

Science help plz! Giving brainlist :D

Biology
1 answer:
KIM [24]3 years ago
7 0
17. The SI unit for force is N.

18. When an Unbalanced force acts upon and object, the object will change speed and/or direction of motion.

19. Average speed is the speed averaged over a span of time. Instantaneous speed would be the speed at any given instance during that span of time.

20. Acceleration= (final velocity - initial velocity) / time

Final velocity= 0 m/s
Initial velocity= 25 m/s
Time = 40 sec.

So, acceleration (0 - 25) m/s / 40 sec.

Acceleration = -0.625 m/s^2
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Answer:

Option A

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A. Which form of nitrogen in the soil is NOT usable by organisms?
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Answer:

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B) it can not be used because it most be converted or, ’fixed’  to a more useable form. To do this it goes through a process called fixation.fixation is the change in a gene pool from a situation where there exists at least two variants of a particular gene (allele) in a given population to a situation where only one of the alleles remains.

C) This form can be made more usable if it’s converted. It has to go through the process of fixation so the gene pool changes.

Explanation:

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