1. It is because the turtle's tears contain one ingredient that is lacking in the butterflies diet - sodium.
2. It is essential for the insects to drink them as the forest lies 1,000 miles away from the primary source of salt - The Atlantic Ocean. This together with the fact that rain strips the atmosphere of any mineral particles it contains before it reaches the forest, makes the area extremely lacking in sodium, which is vital for of all living beings. No, they won't hurt the turtles.
3. Bees. According to the author, the buzzing or they may not be as gentle as the butterflies ,irritate the turtles.
Critical thinking challenge
Both turtles and crocodiles eat meat which contain sodium.