it means it is storing the heat, not leatting it out.
Yes, it's fine.
The plural form for rabbit ears is (one) rabbit's ears; or (two) rabbits' ears.
True
It's not true that rabbits with long ears have a longer lifespan than rabbits with short ears. Ear length has no bearing on a rabbit's lifespan.
it means they're listining to their surroundings.
It depends on its species and size. Tiny rabbits have tiny ears.
if there cold that mean just there cold it dosent mean anything just rap them up in a blanket
There are many rabbits with ears sticking up. My Netherland dwarf rabbit, which is the smallest rabbit, has upright ears. Also dutch rabbits and rex rabbits do, to name some. Hope this is of some help :)
All rabbits have long ears...
No. There are breeds who have floppy ears.
Genetics.
Their ears have gotten longer to hear better.