If you eat a sandwich that has 100 units of energy, and 40 units are used by your cells, what accounts for the other 60 units of energy?

the first law of thermodynamics

the second law of thermodynamics

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

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.

How do living things obtain phosphorus