Question

9. (a) In man, kidney is a part of the system, which
related to:
(i) nutrition (ü) respiration
(iii) excretion (iv) circulation​

Answer 1

Answer:

iii) excretion

Explanation:

Humans have two kidneys and each kidney is supplied with blood from the renal artery. The kidneys remove from the blood the nitrogenous wastes such as urea, as well as salts and excess water, and excrete them in the form of urine. This is done with the help of millions of nephrons present in the kidney

Answer 2

Answer:

nutrition

Explanation:

because it absourbs energy from the food particle