HELP RIGHT NOW PLZ BRANNIEST TO WHOEVER RIGHT

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

Biomass can be used to generate electricity. biomass relies heavily on agricultural crops. plants release carbon dioxide and water in combustion. plants use photosynthesis to originally generate the energy that is needed. the chemical energy of these plants all started with what energy source?

How does the study of genetic disorders such as pku biologists understand normal alleles?