Logic Riddles

Question: What has rivers but no water, forest but no trees and cities but no people.

Question: You're in a VERY dark room. You enter it, and immediately everything you see dissolves into darkness... But suddenly, you see the faintest red light. You COMPLETELY close and cover an eye, but You can still see the red light. How is this possible?

Question: How can you take 9 away from 8?

Question: How do you run around your block 10 times without breathing heavily?

Question: You were counting sheep. You thought you counted eight but you only counted seven and a half. How is that possible?