Its electric energy, Because its still hydroELECTRIC power.
The answer is A. carbon dioxide.
Basically plants use carbon dioxide and water for photosynthesis.
Paramecium have cilia, volvox have flagella
paramecium are individual single-celled organisms, volvox live in spherical colonies with many other cells forming a sphere
paramecium feed off smaller protoctists and bacteria, volvox produce their own food because they have chlorophyll
Im pretty the correct answer is stinging cells