Because they have power to move.
Because the Independent Variable is what you change to get a different change, and that is what the Dependent Variable is.
Answer:
The sides of the ladder are made of alternating sugar and phosphate molecules. The sugar is deoxyribose. The rungs of the ladder are pairs of 4 types of nitrogen bases. Two of the bases are purines- adenine and guanine.
Explanation:
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It is the ratio of a line segment cut into two pieces of different lengths such that the ratio of the whole segment to that of the longer segment is equal to the ratio of the longer segment to the shorter segment.
So that they don't argue over results when two types of measurements equal the same thing but are just put differently