Smaller organic molecules such as glucose or amino acids can be combined into larger macromolecules. what do we call the smaller molecules from which the macromolecules are built?

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

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explanation:

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this is math not biology xd

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.