Um I thought it was salt and water? I might be wrong though..
Well it depend what science are u talking about.
Physic would require algebra and something about graph (Reading graph)
Biology would require graphing and simple add and subtracting
Chemistry would require graph and know how each atom react to each other. <span />
Answer: Lipids
Explanation: The ratio of saturated and unsaturated fatty acids (lipids) determines the fluidity in the membrane at cold temperature.
<span>B. maintain a balance of power.
The alliances among nations in Europe was established to maintain a balance of power in the region.
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