B. Weakened
Overtiredness has a negative effect on driving capabilities.
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Answer: Visible light spectrum.
Explanation: On the entire electromagnetic spectrum, the human eye can only detect and view the visible light spectrum which is what we, as humans, can separate into “rainbow-like colors.”
Answer:

Explanation:
= Mass of clay = m
= Mass of block = 3m
= Velocity of clay
= Velocity of block = -3 m/s
= Velocity of combined mass = -1 m/s
As mometum in the system is conserved we get

The original velocity of the clay mass was
.
Answer:
The amount of carbonate, a main building block in sea water, is reduced by ocean acidification. This makes it harder for marine organisms to shape their shells and skeletons, such as coral and some plankton, and existing shells will begin to dissolve.
Because time is relative.
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