Can anybody tell me the answer for this pedigree

People who exercise for an hour may have lower cholesterol levels. is that a statement? a law? or a hypothesis?

What can be found in every skeletal muscle? a. nerves, bones, cartilage, and connective tissue b. tendons, cartilage, nerves, and blood vessels c. muscle fibers, nerves, connective tissue, and blood vessels d. tendons, nerves, blood vessels, and bones

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.