Answer:
I have a straight back and sharp teeth to cut objects.
I make you weak at the worst of all times. I keep you safe, I keep you fine. I make your hands sweat and your heart grow cold. I visit the weak, but seldom the bold. What am I?
The more you take away from me, the bigger I shall get. What am I?
I am whole but incomplete. I have no eyes, yet I see. My largest part is one fourth of what I once was. What am I?
I am orange and sound like a parrot.
The answer I give is yes, but what I mean is no. What was the question?