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.

Input: Consider Input: Fact: growth occurs on the windward side of the mountain range. 
Question: What occurs on the windward side of a mountain range?

Output: growth.


Input: Consider Input: Fact: Something that begins its life in water has permeable skin that easily absorbs substances from the environment. 
Question: Something that has permeable skin that easily absorbs substances starts life where?

Output: Water.


Input: Consider Input: Fact: Some aviary species fly and others swim but, all are endothermic tetrapod vertebrates. 
Question: Some aviary species fly and others swim but, all endothermic tetrapod vertebrates share what trait?


Output: feathers.