Answer:
I turn around once. What is out will not get in. I turn around again. What is in will not get out.
I hatch without food
I drift forever with the current and flows to your everyday life. I make living easy but I am good at killing people too.
What goes up and down, but does not move?
Part carbon part water I am poison to the fishes. Many falsely claim my name I am the pause that refreshes.
Lynn likes grapes but not potatoes. She likes squash but not lettuce, and she likes peas but not onions. Following the same rule, will she like pumpkins or apples?