Good Riddles

Question: I can pogo on the moon, but not Mars. I can pogo on this table, but not on a stick. What can assure us to be able to pogo on objects at all times?

Question: What is green and has wheels?

Question: What temperature is twice as hot as 0 degrees Celsius?

Question: There are five hen and rooster pairs. Each pair has one baby every month.

How many chickens will there be in one year?

Question: I tear paper but I'm not mad,
I wear a purse but it's not a fad.

Who am I?