Hydrogen bonds are bonds between a hydrogen in one polar molecule and the negatively charged end of another polar molecule. Hydrogen bonds allow two molecules to link together temporarily. Water molecules are made up of two hydrogen atoms and one oxygen atom, held together by polar covalent bonds.
Answer:
0.72 m/s^2
33.7 degrees north of east
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The answer is
B. ecotourism
An epoch is longer than an era.
