The correct answer is they filter water and solutes from blood.
<span>The nephron is a structural unit of kidneys with the function to filtrate blood in order to produce urine. A nephron is used to ultrafiltrate water, ions and small molecules from the blood, to excrete wastes and toxins, and return needed molecules to the blood (reabsorption).</span>
They turn brown because they begin to decompose..which is why bananas are biodegradeble because they are able to become decomposed by other living things
Because through natural selection, only the fittest survive. when the fittest come together and reproduce then the species continues and evolves with only the fittest and strongest genes.
Answer: They move against the concentration gradient
Explanation: This is because, with active transport, the molecules go from a low concentration to a high concentration.
