Answer:
Flat as a leaf round as a ring. I have two eyes but can't see a thing.
By myself, I'm practically nothing. Worthless as a leader, but when I follow a group, their strength increases tenfold. What am I?
I sleep by day, I fly by night. I have no feathers to aid my flight. What am I?
I go into the water black and come out red. What am I?
I am flora, not fauna. I am foliage, not trees. I am shrubbery, not grass. What am I?
What did the grape do when he got stepped on?