Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Question: Which type of plankton make food via photosynthesis? Answer: phytoplankton
Phytoplankton are "plant-like" plankton. Since they make food by photosynthesis, they live in the photic zone. Most are algae.

Question: What type of species can alternate between medusa and polyp forms? Answer: cnidarian
As you can see in Figure below , both body plans have radial symmetry. Some cnidarian species alternate between medusa and polyp forms. Other species exist in just one form or the other.

Question: What kind of power plant uses energy to heat water that becomes steam and spins turbines? Answer: nuclear power plants
Nuclear power plants use the energy they produce to heat water. The water turns into steam, which causes a turbine to spin. This in turn produces electricity.