Can you put these steps in order? Short grasses grow tall in the rich soil. When pioneer species die, nutrients are added to the soil. Lichens begin to grow on the surface of exposed rocks.

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.

the correct answer should be false

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dna is a set of a gene held together by a chemical bond