An open system is different than a closed system because open systems do not freely exchange energy and matter with its surroundings. closed systems do not exchange energy with its surroundings. closed systems freely exchange energy and matter with its surroundings. open systems freely exchange energy and matter with its surroundings.

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.

archaebacteria are found in in forest soil.

hope i spelled it right lol

hope i

-lavira: )