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

Producers in an ecosystem generally get their energy from the sun.
Where do producers in an ecosystem generally get their energy from?

Water seeping into the ground is known as infiltration.
Water seeping into the ground is known as?

Carbon (c) is essential to living organisms because carbon bonds in many ways with itself to form chains.
What characteristic of carbon (C) makes it essential to living organisms?