instruction:
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:
Terrestrial biomes are classified by climatic factors and types of primary producers.
answer:
What are classified by climatic factors and types of primary producers?


question:
Producers in an ecosystem generally get their energy from the sun.
answer:

Where do producers in an ecosystem generally get their energy from?