Which statements are true about the phosphorus cycle? Select all correct answers. A) Phosphate flows from the atmosphere to the geosphere.

B) Phosphorus is stored in only abiotic reservoirs.

C) Weathering releases phosphate from rocks.

D) Phosphate is taken up by producers in aquatic ecosystems.

B) Phosphorus is stored in only abiotic reservoirs.

Explanation:

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.