Answer:energy
Explanation:all activities of life including physical and chemical require energy to proceed
I order to have an a experiment the results have to be repeatable you have to know what ur doing to the experiment and repeat it to get the same outcome if that hrlps
Answer:
we have two kidneys is so that there is some extra reserve of kidney mass in case we sustain some renal insult .The kidney is made up of nephrons, whose job is to filter, secrete and reabsorb solutes and water. More kidney mass = more nephrons.
Explanation:
