Describe what happens when cells divide uncontrollably?

Typically when cells divide uncontrollably and spread they form into cancer. A change in DNA causes the cell to begin to act in this manner. A cell could do this from many different causes such as exposure to radiation, harmful chemicals, and smoking.

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answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

your answer should be c) enjoy!