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

Input: Consider Input: Light retains its original color under water because frequency remains the same when light is refracted.

Output: Light retains its original color under water because what remains the same when light is refracted?

Input: Consider Input: Transpiration is when plant roots absorb liquid water and release water vapor into the atmosphere.

Output: What is it called when plant roots absorb liquid water and release water vapor into the atmosphere?

Input: Consider Input: The first photosynthetic organisms were not plants, but types of bacteria that lived in the water.
Output: The first photosynthetic organisms were not plants, but types of what that lived in the water?