TASK DEFINITION: Turn the given fact into a question by a simple rearrangement of words. This typically involves replacing some part of the given fact with a WH word. For example, replacing the subject of the provided fact with the word "what" can form a valid question. Don't be creative! You just need to rearrange the words to turn the fact into a question - easy! Don't just randomly remove a word from the given fact to form a question. Remember that your question must evaluate scientific understanding. Pick a word or a phrase in the given fact to be the correct answer, then make the rest of the question. You can also form a question without any WH words. For example, "A radio converts electricity into?"
PROBLEM: Fact: Gases from burning coal and oil dissolving in water in the atmosphere causes polluted rain.

SOLUTION: Gases from burning coal and and oil dissolving in the atmosphere can cause what?

PROBLEM: Fact: female echidna lack a uterus and vagina.

SOLUTION: what females lack a uterus and vagina?

PROBLEM: Fact: Female gametophytes produce eggs inside  where ovum, or eggs, are stored of flowers.

SOLUTION:
Female gametophytes produce eggs inside what part of flowers?