If a hawk ate a snake, the snake ate a mouse and the mouse eat
the grass this would make the hawk what level consumer?

The answer is Top consumer or Tertiary consumer .

Explanation:

In a food chain or food web, the highest level of consumer is Top consumer .

In this food chain :

Grass -> Mouse -> Snake -> Hawk

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.