Answer:
I start in little but I end in full you'll find me in half and complete.
I am a seed with three letters in my name. Take away the last two and I still sound the same.
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.
I have skin, more eyes than one. I can be very nice when I am done. What am I?
Deposit red liquid in me.
Give it food and it will live, give it water and it will die.