Answer: I’m not sure how to answer this but from what I’m thinking is…
Answer:
"I would need to make a model of a Solar system because it is too large to study directly."
"I would need to make a model of a Cell because it is too small to study directly."
Explanation: I’m sure this is correct because it all adds up! A cell is small and a solar system is large. Hopefully this helps :)
Answer: An organism that benefits at the expense of another organism.
Explanation: Because predators benefit from prey, and prey have to provide for predators.
I think it's a little bad that I know this but the first one is sperm pretty sure and the second not so sure but yeah I hope I helped a little
Answer:
The correct answer will be option-B
Explanation:
Kidneys help maintain the blood volume by activating renin-angiotensin-aldosterone (RAAS) system. The activation of the system increase sodium retention which helps reduce the amount of water lost into the urine.
The RAAS system is activated when the receptors sense the decrease in the volume of the blood. This leads to the production of renin from the juxtaglomerular cells of the kideny. The renin help converts the inactive angiotensin to angiotensin I and angiotensin II by ACE enzyme.
Angiotensin II stimulates the production of aldosterone from the adrenal cortex which promotes the retention of sodium from tubules and maintains the long term blood pressure.
Thus, Option-B is the correct answer.
Activation of the renin-angiotensin-aldosterone (RAAS) system causes increased sodium retention by the kidneys, which leads to reduced water loss into the urine and therefore blood volume expansion. RAAS activation occurs during heart failure, which leads to fluid retention in the body. RAAS activation also occurs with renal artery stenosis, which is one cause of secondary hypertension.
Answer:
the answer would most likely be a hope it helps