Many body systems interact to help the body maintain homeostasis. For example, the primary function of the kidneys is filtering waste from the blood. Hormones are released in response to salt
concentrations, pH, and sugar levels in the blood. These hormones help regulate how the kidneys
function. For example, if salt concentrations in the blood are too high, the hormone ADH may be
secreted by the pituitary gland to signal the kidneys to excrete less water in the urine.

Which systems are interacting in this description?

a. Excretory, circulatory, digestive
b. Excretory, endocrine, respiratory
c. Endocrine, digestive, respiratory
d. Endocrine, circulatory, excretory

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.

a. an idea which cannot be disproven!

explanation: