Biology, 20.10.2019 03:30, lilpetals

Under normal conditions, when cells are not in contact with other cells this will signalthem to divide. when cells are too closely packed together they will stop dividing. these are examples of signals.
a. external
b. chemical
c. internal
d. none of the above

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Under normal conditions, when cells are not in contact with other cells this will signalthem to divi...