Answer:
chitin
Explanation:
chitin is a complex carbohydrates, similar to cellulose, that makes up organic structure, such as the cell walls of fungi and exoskeletons of insects and other arthropods.
Because the soil didn't have the same nutrients it has now due to lack of decomposition of other plants and animals.
The complete period of non division during the cell cycle is G0 (Gap zero).
D1, A2, B3, C4, and sicnce 5 and E are left i guess they mach up, but it dont think that water is a wast.. but the other one r right
Bone Marrow is tissue in the hollow centers of our bones, it has stem cells which produce our blood cells. It also produces red blood cells that give oxygen to the whole body. Hope this helped : )
