Answer:
I tremble at each breath of air, and yet can heaviest burdens bear. What am I?
I spend the day at the window, go to the table for meals, and hide at night. What am I?
Why is it so easy to weigh fish?
I have an eye but cannot see. I am fast but I have no limbs. What am I?
I fly when I'm on and float coming off.
It's what light turns into in the night