I believe the answer is D) reactivity. Hope this helps. (ノ◕ヮ◕)ノ*:・゚✧
It can melt ice which is a solid form of water, also create ice if temp. is cool enough, create gas if warm enough so basically temp. effects the states of matter by either heating it or cooling it
If your asking where Most people in cities get there water.
Then the answer is by delivery through pipes.
Because when salt dissolves, it makes the water more dense, and things float better on a denser surface.
The answer is option A "be affected." Every species is prey and a predator. For example a fox eats rabbits and a mountain lion eat's the fox. So if a fox species dies rabbits population would increase (since how they have one less predator to eat them) and mountain lions population would decrease. (since how they lost a food source so they will starve)
Hope this helps!