An example of a snack low in energy density is

How do nicotine and tobacco cause cancer? by decreasing blood-sugar levels by damaging or changing a cell's dna by increasing heart rate by increasing phlegm and mucous production

When studying heredity, what is the relationship of dna based and traits? super urgent !

How are the causes of the problems viewed? medical model public health model human services model. what is a method of treatment? medical model public health model human service modelj