Answer:
The river would break through its natural levees, depositing sediment and fresh water in the surrounding wetlands, keeping them healthy, productive and intact.
Mabye you should provide an answer key or mabye make the question more accurate.
I think it's A but here's an explanation anyway: as you heat the crude oil, the different hydrocarbons, having different boiling points, boil and evaporate up the column. Those with lower boiling points, shorter in chain length, will condense nearer the top of the fractional distillation column. Those that are more viscous, larger in chain size, will have high boiling points, so will evaporate last and condense lower down in the column. Therefore, you achieve all the different oils / materials (oil, petrol, gasoline, tar etc etc). I hope this helps. If not, then a good website to use is 'BBC bitesize, fractional distillation'.
Answer:
All food has came from our natural environment. We depend on it because we need food to survive??!!!!! Thats the obvious answer.
Explanation:
Nothing else to say this is a easy question.
