instruction:
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.
question:
Fact: Some insects communicate with chemicals called pheromones. 
Question: How do some insects communicate?
answer:
pheromones.


question:
Fact: Stopping or slowing for turns can cause skidding. 
Question: Stopping or slowing for turns can cause what?
answer:
skidding.


question:
Fact: HIV is so small it can only be seen with an electron microscope. 
Question: what is so small it can only be seen with an electron microscope?
answer:

HIV.