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: Starfish lack respiratory and excretory systems. 
Question: What kind of animal doesn't have a respiratory or excretory system?
starfish.

Fact: melting means changing from a solid into a liquid by increasing temperature. 
Question: what is increased to cause something to change from a solid into a liquid?
temperature.

Fact: Dirt can be depleted of nutrients. 
Question: When gardening what can be depleted of nutrients?

the dirt.