Which of the following contributes to water pollution? will give brainliest.

a) chemical pesticides sprayed on farmlands
b) algae blooms
c) both a and b
d) neither a and b

? you

Several billion years ago which gas was the least prevailant in the atmosphere

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.

If a cell is placed into a hypertonic environment,what will happen to it ? a)it will shrink or shrivel b)nothing c)it will burst d) it will expand or enlarge