Answer:
ATP
Explanation:
atp is the main source of energy for many cellular processes including muscle contraction and cell division.
Polar covalent bonds.
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Gravity only depends upon the mass of an object.
There are multiple reasons. 1) there are similar fossils found on different continents. 2) the continents shapes show that they could easily fit together. 3) there are similar rocks, minerals,and land forms on different continents. 4) there's evidence that there was once lush vegetation in areas with extreme cold.
