Identify the chemical formulas from the reactant side of this chemical equation 2hci+fes

This is a type pf behavior that animals are born with and them to survive

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.

The activity of the modern sample is 1.10 bq . how long does that measurement take?