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

The sun delivers power to the chemical factory chloroplasts.
What delivers power to the chemical factory chloroplasts?

Starches are complex carbohydrates that are the polymers of glucose.
What complex carbohydrates are the polymers of glucose?

Gases such as co2 and methane can trap thermal energy in earth's atmosphere before radiating it into space.
Gases such as co2 and methane can trap what energy in earth's atmosphere, before radiating it into space?