In the human body what types of substances might need to constantly move into and out of the cells in order to keep them alive? * *choose all that apply*
minerals
nutrients
water
bacteria
oxygen
blood
carbon dioxide
wastes
hormones

the supermassive black hole is in the middle of the galaxy.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves