What Am I Riddles

Question: In spring I look gay, Covered in a green array, The warmer it gets the more clothing I wear, As the cold grows, I throw away my clothes.

What am I?

Question: After you go through a fall I will take over.All life will stall, or at least grow slower.What am I?

Question: I am a child and a simpleton at once.
All are born with me,
But rarely am I possessed at death.

What am I?

Question: What has holes on each side, but can still can hold water?

Question: I am very easy to get into,but it is hard to get out of me.What am I?