How would u define biology and relate it with its major divisions ?

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

Which of the following is most likely the result of an organism having lipids in its body a) water cannot be absorbed through the surface of a leaf b)human eats fruits to get a quick source of energy c) a sheep sleeps for more hours in the winter d) a warm river is filled with fish and algae

What are the characteristics of subsystem