What is the circulatory system's function? : )
a. it removes cellular waste from the blood and converts it to urine.
b. it exchanges carbon dioxide and oxygen in the lungs.
c. it transports oxygen and nutrients to cells while removing carbon dioxide and other wastes
d. it breaks down food into usable parts.

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.