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

Ex Input:
Photoautotrophs and chemoautotrophs are two basic types of autotrophs.

Ex Output:
Photoautotrophs and chemoautotrophs are two basic types of what?


Ex Input:
Phospholipids are the main component of the cell membrane.

Ex Output:
What is the main makeup of the cell membrane?


Ex Input:
In a heat map, bright yellow color represents the hottest temperatures.

Ex Output:

In a heat map, what color represents the hottest temperatures?