Answer:
I am rubber you can eat!
I am needed for most animals and hardcover books
I am an odd number. Take away one letter and I become even. What number am I?
I'm not alive but I grow I don't have lungs but I need air I don't have a mouth but water can kill me. What am I?
You buy me to eat, but never eat me. What am I?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.