What is the main determining factor of the boundary between the layers

As the human population grows, what happens to our natural-resource requirements? o they increase o they decrease o they do not change. they go in cycles

How do you date a sample of rock that you suspect as being one of the earliest on earth

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.