What genes are mutated to cause cancer?
a. genes involved in the cell cycle
b. genes involved in disease fighting
c. genes involved in removing toxins
d. genes involved in making hormones

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's

some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

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