Can anybody help me with this

hey iam bored pls join

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Explanation:

If another predator was introduced to this food web, this food web would fail because it won't be balanced well. Let's say the predator eats more food than the eagle. Then the eagle would have less food for itself, and it might go endangered, and vice versa if the eagle eats more. Either way, this would cause almost no worms left and that means there would be an overflow of the rats because there would be no worms for them to be eaten by. This would cause a shortage of crops as well.

I hope this made sense!

c is the answer because when something is left after something evaporates that shows the chemical change.

b) nuclear ive learned that in a pedtrodic table