Answer:
What can you put in a barrel to make it lighter?
Autumn leaves and bad bowlers wreak havoc on this
Sometimes black, sometimes white, I have veins but no blood
There is an ancient invention. Still used in some parts of the world today. That allows people to see through walls.
What bird can lift the heaviest weight?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?