Which element would be considered a trace element? a) carbon b) hydrogen c) iron d) nitrogen

Your answer is C if its asking for trace in the human body and if its asking for normal trace such as (DNA) it would be A .

Brainiest Please?

The option C is correct. Iron is a trace element.

Trace elements are elements which are required in small amounts but they are essential to the body.

Carbon and hydrogen are needed in abundant amount because it is present in all organic compounds like sugars, and lipids.

Nitrogen is part of amino acids, building blocks of proteins.

Iron is essential only for some enzymes and hemoglobin. And it can also be recycled in the body.

life would be meaningless without memes

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.