Answer:
What can be as big as an elephant but weighs nothing?
What happens when you throw a green stone into the Red Sea?
I am always in front of you, but you will never see me. What am I?
What word becomes shorter when you add two letters to it?
I am heavy forward, but backward I'm not. What am I?
I start with T end with T and within me is T.
What am I?
Animal
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Food
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Logic