First blank space is endocrine system and the second blank is hormones
The kidneys.
The kidneys keep blood isotonic by removing excess salt and water through urine.
Answer:
not enough clean oxygen being produced for us to breathe, loss of habitat for countless species causing them to possibly go extinct.
I think the correct answer from the choices listed above is option C. <span>Enzymes are catalysts. This means that they are able to speed up chemical reactions. Also, they are not used up by reactions. They are not being consumed in the process. Hope this answers the question. </span>
