Answer:
I transfer oxygen from the atmosphere to your blood
I sleep by day, I fly by night. I have no feathers to aid my flight. What am I?
I work when I play and play when I work
If a man carries my burden they will get crushed to death. Though not rich I leave silver in my track.
There's not a kingdom on the earth I haven't traveled over and over and though I know not whence my birth yet when I come you know my roar. I through the town do take my flight and through the fields and meadows green and whether it be day or night I neither am nor can be seen.
What’s a carpet’s favorite sport?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic