Question

how does the density of ice compare to that of liquid water and why is that property important to aquatic organisms?

Answer 1

water is much denser than ice and its important cause if the ice was denser than water it wouldn't float and the marine animals would die. The ice being not as dense as water helps aquatic organisms by keeping the temperature of the water from dropping too low.

Answer 2

@musicdramalife00 You need to think more deeply. If water was not as dense as ice, how would life have even evolved? Denser ice would mean it would sink and it is likely that bodies of water would therefore freeze solid. It does not have too much to do with the temp. At extreme pressures water can be beneath 0 C and life can still live in that.

Answer 3

... when water freezes it expands and thats why the ice is less dense

Answer 4

and the layer of ice keeps the water temperature constant... therefore the entire body of water wouldn't freeze completely... i thought that was self explanatory.... i guess not sorry.

Answer 5

@musicdramalife00 True. I am saying if that was not the case it would mean life would likely not have been able to evolve. My point is you have to think about what it would mean for life not with life already around, but with actual evolution of life.

Answer 6

i guess i'm just not that great at explaining i'm sorry mrdoldum is completely right.

Answer 7

@musicdramalife00 Nothing you said was bad, I was just meaning we also need to look at the situation from the a pre-life point.

Answer 8

but it is asking about aquatic animals which means there is already life

Answer 9

@musicdramalife00 It is asking why is that important for aquatic life. I would say the fact that if it was not the way it is aquatic life would probably not have been able to evolve is pretty important.

Answer 10

And yes, if it changed now it would probably kill all the life in a body of water.

Answer 11

well while you're still here please enlighten me with your wisdom why is starch required for Co2 fixation in the cactus but not the C4 plant... i actually have no idea. is it cause starch can start the process of opening the guard cells to receive CO2? halp

Answer 12

@musicdramalife00 http://plantphys.info/plant_physiology/c4cam.shtml Near end of page should answer the question.

Answer 13

ty