Why is it important to develop cardiovascular fitness early in life

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

Sweat glands that cause orders during puberty are present in the body from the time of brith

Traffic patterns refer to: how you move through a space hallways how rooms are connected to each other how rooms are organized