Write a correct answer to the given question based on its associated fact. Make sure that your answer is contained in the associated fact. Don't be creative and introduce any new word that is not mentioned in the associated fact! Remember that the associated fact has been rearranged to form the question. So, the correct answer words must lie within the associated fact. The correct answer can be a word, phrase, or even a sentence.

Fact: a hole over antarctica causes global warming. 
Question: What does a hole over Antarctica cause?
Global warming.

Fact: a platypus lacks a uterus. 
Question: What do platypuses not have?
uterus.

Fact: organisms commonly found on rotting logs and compost reproduce by way of spores. 
Question: organisms commonly found on rotting logs and compost reproduce by way of what?

spores.