Habitat I needed more thing for it to let me answer
Answer:
Carotid arteries also branch off the aortic arches and supply the head region. Veins bring blood to the left and right atria. Both atria then empty into the single ventricle. Blood from the ventricle thus enters either the pulmonary or body circulation.
Explanation:
A population decrease in primary producers would affect the ecosystem negatively because everyone who ate the primary consumers would have a lack of food.
The answer your looking for is c hope it helps
and #rateme
I would say the scientific method?