The answer is D.
Nodal: denoting a point in a network or diagram at which lines or pathways intersect or branch.
Answer:
Honestly, I think that all of them are equally important, they all have things about them that make them important and they all play a role in the survival of humanity and other organisms! So if u can put all of them, I think it would be the right answer!
Answer:
maybe because of the tides from the moon or global warming?
Explanation:
it could be the tides because of the mooons gravitational force or it could be global warming and the ice melting makeing the water level higher i hope this helps in some way have a good day XD