Are you looking for their name?
They are called chemotrophs; this means that they obtain their energy from chemical reactions.
They are different from phototrops, which obtain their energy from the sun, mostly through the process called photosynthesis.
Let me know if you were looking for something else than a name and if there were options:)
Answer: A. Large earthquakes offshore of Portugal.
Explanation:
Large earthquakes in coastal areas can cause tsunamis, an example of which being the boxer day tsunami in 2004.
