Answer:
Symbiosis is a close relationship between two species in which at least one species benefits. Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected.
The main role of ATP<span> is to provide energy
</span>energy released is used for metabolism in thecell<span>. Other reactions that require energy from </span>ATP<span> include; active transport/ muscle contraction/ glycolysis.</span>
Renal medulla
The renal medulla contains the renal pyramids, where urine formation takes place. Urine passes from the renal pyramids into the renal pelvis. This funnel-shaped structure occupies the central cavity of each kidney and then narrows as it extends out to join the ureter.
