A scientist is examining the role of an element found in fats and carbohydrates of living things. This element makes up 65% of human body mass.
Which statement describes the element he is studying?
O He is studying oxygen, which can also be found in proteins.
He is studying oxygen, which is the most abundant element in the atmosphere.
He is studying nitrogen, which can also be found in proteins.
O He is studying nitrogen, which is the most abundant element in the atmosphere.

Research cheetahs on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? -cheetah 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.