Which factor can cause constriction in blood flow through the cardiovascular system?

a.) smoking
b.) excercise
c.) video games
d.) vegetarian diet

i it is d i hope it

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls