What is the main function of your kidneys? * a. secrete excess water as sweat
b. protect against pathogens
c. convert waste products into urine
d. facilitate gas exchange

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?

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.