Through studies on the Malpighian tubules, researchers found that K+ accumulated on the inner face of the tubule, against its concentration gradient. What can you infer about the mechanism of transport?
A) Potassium moves out of the tubules at a faster rate than it moves into the lumen of the tubules.
B) Movement of potassium into the lumen of the Malpighian tubules is an energy-requiring process.
C) Sodium ions will follow potassium ions.
D) Potassium transport is a passive process.

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.

atp is used for energy.

it is a limiting nutrient limited by a single nutrient in the ecosystem, & the single goes very slow.

answer; blending inheritnace;