ASAP lots of trouble on this one Antidiuretic hormones functions to retain water in the body. Which of the following would cause a more concentrated urine to flow into the ureters?

ADH release by the kidney
ADH inhibition by the kidney
ADH inhibition by the pituitary
ADH release from the pituitary

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?