You are presented with the quiz "When available food and water decreases, what cease to be a part of the balance of nature?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "if the amount of available food and water decreases in an environment then animals may leave that environment to find food and water" and "when wild animals no longer find their own food, they cease to be a part of the balance of nature". 

So, what's the best answer to the question?


 

        animals   