Plz help I need help

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

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.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes