<span>The right answer is "increase". On the off chance that there's less food for them to eat,, they are going for a battle for it more on the grounds that both will need the little measures of nourishment that they scarcely get. The opposition increments.</span>
An autotroph is an organism that prepares its own food using simple organic materials whist a heterotroph is an organism that cannot prepare its own food but depends on other organisms for survival.
The short term effect of that would be stomach problems and liver damage. And thats just for fresh water. for salt water you would get shellfish poisoning, vomiting, diaherra, etc. <span />