Answer:
Fossilized remains of marine organisms
Answer:
Pulmonary circulation only occurs between the heart and the lungs. Systemic circulation refers to the circulation of blood in which oxygenated blood is pumped from the heart to the body and deoxygenated blood is returned back to the heart. Systemic circulation occurs between the heart and the entire body.
Pulmonary circulation moves blood between the heart and the lungs. It transports deoxygenated blood to the lungs to absorb oxygen and release carbon dioxide. The oxygenated blood then flows back to the heart. Systemic circulation moves blood between the heart and the rest of the body.
Explanation:
Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body. From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart.
Active transport is the process that moves particles across a membrane that requires energy. This is because it moves particles from a low concentration to a concentration that is higher.
A.) The relationship between an owl and mice could be described as "<span>Predator-prey"
Here, Predator is Owl, as it eats mice which is prey.
Hope this helps!</span>
