Fact 1: Tidal energy can be used to produce electricity.

Fact 2: Tidal caves are formed by the energy of the rising and falling tides.

Given the two facts above, answer the question "what can produce electricity?" with the following options: 
- rivers
 - animal transport
 - tidal caves
 - Nematoda
 - rays or beams
 - animals
 - cactuses
 - photons


 

   tidal caves      