It is not breathing not moving and if you pick it up it is not struggling or moves its head.

2 years to 4 years.

Yes they do to find out more go onto Google. I hope this helps.

By leaving them alone! Put them back into the tank and let the turtle look after them! If your turtle has rejected them because you touched them and they have your smell on them put them near somewhere really warm! I hope answered your question!

I think they eat worms and live fish or you can buy REALLY expensive food from turtle rescue places. I hope I answered your question.