Phytoplankton get their energy from the sun and
produce about 50% of all
of the atmospheric
oxygen worldwide through
photosynthesis. They are
also known as
A. producers
B. consumers
C. heterotrophs

Producers

Explanation: This is the answer... sorry if i got it wrong

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.

what in the weirdo : o