1 Cancer is a disease where cells do not follow the usual sequence of checkpoints or behaviors. A) Describe the NORMAL order of events that a cell encounters in its life cycle. Please be specific. B) What are the usual checkpoints that a cell would encounter in its cell cycle? (You should name 3) C) What happens normally if cells cannot pass the checkpoints? D) Why do cancer cells tend to pile on top of each other to form tumors? (What normal growth inhibitors are cancer cells

air, water, heat and noise pollution can all be caused by producing and using technology. consuming resources - non-renewable resources, including precious metals like gold, are used to make technology

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

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the fossil record provides evidence of a common ancestor to many species.