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: Question: The shield type of what phenomenon commonly forms above hotspots in the oceans? Answer: volcano

Answer: Shield volcanoes commonly form above hotspots in the oceans.

Question: Question: What component of cells is present in plant and bacterial cells but not animal cells? Answer: cell wall

Answer: Animal Cell. The shape of an animal cell is not constrained by a rigid cell wall. A bacterial cell is shown above for comparison.

Question: Question: What is the third male reprodutive structure after the penis and testes? Answer: epididymis

Answer:
Male reproductive structures include the penis, testes, and epididymis.