Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Example Input: The bones of the newborn skull are not fully ossified and are separated by large areas called fontanelles.
Example Output: The bones of the newborn skull are not fully ossified and are separated by large areas called what?

Example Input: Terrestrial biomes are classified by climatic factors and types of primary producers.
Example Output: What are classified by climatic factors and types of primary producers?

Example Input: The term concentration describes the number of items in a given area or volume.
Example Output:
What term describes the number of items in a given area or volume?