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: Taste and smell have a positive impact on  an animal's survival. 
Question: What has a positive impact on animal's survival?
answer:
taste and smell.


question:
Fact: Fertilization occurs when haploid gametes unite. 
Question: What occurs when haploid gametes unite?
answer:
fertilization.


question:
Fact: Accidental alterations of the genetic code in a cell can cause new traits to appear in a parent's offspring. 
Question: What can appear due to accidental alterations of the genetic code in a cell?
answer:

New traits.