The answer is “it is the gap between neurons” and “it ensures that information travels in one direction only.”
Answer:
Movement in some flatworms is controlled by longitudinal, circular, and oblique layers of muscle
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Answer:
D
Explanation:
It is often like this: cell->tissue->organ->system
Answer:
mutation
Explanation:
A mutation is a random change to genetic material. ... If a mutation occurs in a gene that results in a change to the sequence of DNA bases, then the structure of the protein that is made may also be altered. This could alter an individual's phenotype
