Answer:
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Explanation:
Each molecule has a characteristic size and shape that determines its function in the living cell. The shapes of molecules are determined by the positions of the atoms' orbitals. When an atom forms covalent bonds, the orbitals in its valence shell are rearranged.
Answer:
7.false 8.commensalism 9.last one
Explanation:
The mass of the rock is 4,000 g because mass= Density multiplied by volume so you do 200 * 20
If the bill is counterfeit and the paper is wood-based, the iodine in the pen solution will react with the starch and leave a dark brown or black mark.