instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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:
The long, threadlike extensions of the nerve cell help transmit nerve impulses.
answer:
Which part of the nerve cell helps transmit nerve impulses?


question:
Proper kidney function is essential for homeostasis of ph level, which in turn helps ensure the functioning of enzymes.
answer:

Proper kidney function is essential for homeostasis of what level, which in turn helps ensure the functioning of enzymes?