Examlex
Proto-oncogenes can change into oncogenes that cause cancer. Which of the following best explains the presence of these potential time bombs in eukaryotic cells?
Acid Rain
Precipitation with a lower pH than normal, caused by emissions of sulfur dioxide and nitrogen oxides from industrial processes and vehicles, which can harm ecosystems and human-made structures.
Secondary Pollutants
Pollutants that are not emitted directly into the air, but form when primary pollutants react in the atmosphere.
Earth's Surface
The outermost layer of the Earth, encompassing both land masses and water bodies.
Grey-Air Smog
A type of air pollution characterized by a mixture of pollutants, including particulate matter and chemicals, that gives the air a dirty, grey appearance.
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