Given the question: Fact 1: Phytoplankton are bacteria and algae that use sunlight to make food.  Fact 2: Plants have a very clever way of using the energy from sunlight to make their food.  Given the two facts above, answer the question "Phytoplankton have a clever way of making food from what?" with the following options:  - sunlight energy  - water energy  - heat energy  - heat produced  - chemical energy  - mechanical energy  - organic matter  - refraction of light
The answer is:
sunlight energy