Given a scientific question, generate a correct answer to it.

Example Input: What two basic types of feather does a bird have?
Example Output: flight and down

Example Input: What form do alkali metals take at room temperature?
Example Output: solid

Example Input: What is the process by which plants capture the energy of sunlight and use carbon dioxide from the air (and water) to make their own food called?
Example Output:
photosynthesis