What are proteins made of, and how many options are there for these building blocks?

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this

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only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.

protistas excret ethanol used in the manufacture of vinegar