Mammals evolved into larger organisms and began subdividing into various species in the a. mesozoic era c. cenozoic era b. paleozoic era d. devonian era

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

What causes darkening of the skin as melanin production increases

Which would be the most useful source of evidence to support mcneill's contention?