Fact 1: Phytoplankton are bacteria and algae that use sunlight to make food.

Fact 2: Phytoplankton, or plant plankton, needs sunlight to live, the same way plants on land do.

Given the two facts above, answer the question "What does plant plankton need for food?" with the following options: 
- Sunlight
 - chemicals
 - glucose
 - warmth
 - Bodily water
 - photons
 - The Sun
 - Energy


 

 Sunlight        