How does the human impact of fertilizers impact the nitrogen cycle? HELPPP PLSS

Human activities, such as making fertilizers and burning fossil fuels, have significantly altered the amount of fixed nitrogen in the Earth's ecosystems. ... Increases in available nitrogen can alter ecosystems by increasing primary productivity and impacting carbon storage (Galloway et al.

Explanation:

The nitrogen cycle is a natural process that adds nitrogen to the soil. However, the use of fertilizers has increased the amount of usable nitrogen in the soil. The extra nitrogen seems appealing from the agricultural viewpoint that more nutrients in the soil means higher yield crops.

Explanation:

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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.