What do you think?

Ok so today in geometry class we had an activity where we had to prove and be able to support our side and well I want to hear people's opinion on these things and why you think that way but w/o any of you looking it up on the internet just from what you...

know...ok?Ok here goes:
The universe could've expanded twice it's size,last night.
V.S
The universe could not have expanded

A crocodile is longer than it is greener
V.S
A crocodile is greener than it is longer

Fire can exist w/o gravity
V.S
Fire can't exist w/o gravity

the greener vs longer cant have any comparison. also they arent solid green. the universe question I wouldnt go with either. the universe doesnt double in size in theory over night. it take millions to billions of years to do so. the fire question peaks my interest. to me I would say no. but im gonna look it up in 5 mins. lol. if a fire happened what way would it flame? I don't know. all that from me brain. now to look up fire in space.