Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
--------
Question: An excellent solvent that holds heat well and allows hydrogen bonds, water substance has many properties critical to life.

Answer: An excellent solvent that holds heat well and allows hydrogen bonds, what substance has many properties critical to life?


Question: Ecological pyramids can demonstrate the decrease in energy, biomass or numbers within an ecosystem.

Answer: What can demonstrate the decrease in energy, biomass or numbers within an ecosystem?


Question: Ocean ridges formed by marine invertebrates living in warm shallow waters within the photic zone of the ocean are called coral reefs.

Answer:
Ocean ridges formed by marine invertebrates living in warm shallow waters within the photic zone of the ocean are called what?