A heterogeneous mixture composes of non- uniform components, so the concrete would be the answer, because you can tell the components from one another.
Answer: bar graphs line graphs data graphs
Explanation:
Neurons, act as the communicators of the nervous system. Neurons receive information, integrate it, and pass it along. They communicate with one another, with cells in the sensory organs, and with muscles and glands.
Information was taken from: http://www.sparknotes.com/psychology/psych101/thebrain/section2/
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Q85. C- Break Down Large Molecules into smaller molecules!