A mold is the cavity left behind in the rock after an organism's hard part has dissolved.
Answer:
C
Explanation:
Every living thing is made up from cells, as they are the smallest unit of a living thing.
<span>The atomic mass is the number of protons plus the number of neutrons in an atom.</span>
The answer is D. Extracellular,
the main ions involve in osmoregulation in a cell are sodium and chloride. Intra-and extracellular distribution of K+ is
influenced, for example, by Na+/K+-ATPase
function, pH, Cellular catabolism and anabolism, Insulin and glucose. Parathormone
and calcitriol are important in the homeostatic regulation of phosphates.
It helps decompose dead waste such as animals and mice and birds and plants, it makes the earth cleaner.