The answer is 5. To find the advantage you just divide 20 by 4.
Answer:
Blood is a homogenous mixture
B, C, and D.
Solar energy is green energy, it wouldn't contribute to global warming. However some places of the world don't receive as much sunlight (the poles) and at night you don't receive as much sunlight either. Solar energy is also very expensive to farm.
<span>The frequency is defined as the number of cycles done in one second:
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where N is the number of cycles and t is the time taken to complete N cycles. The wheel in this problem does N=2 revolutions in a time of t=4.0s, therefore its frequency of rotation is:
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Answer:
1 and 3
Explanation:
because they are going up from 0