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

Input: Consider Input: Modern members of the reptiles group live in many different habitats and are found on every continent except antarctica.

Output: Modern members of what broad animal group live in many different habitats and are found on every continent except antarctica?


Input: Consider Input: Elements are pure substances that make up all matter.

Output: Elements are pure substances that make up what?


Input: Consider Input: Primary active transport involves the forcing of a substance into a cell against its concentration gradient.
Output: What phenomenon involves the forcing of a substance into a cell against its concentration gradient?