I believe the answer is the skull.
Oxygen is required for cellular respiration, it is an aerobic process. When no oxygen is present, the anaerobic process(a process that doesn't require oxygen) called fermentation begins creating ATP in smaller amounts. In cellular respiration, Oxygen is used to move electrons through the electron transport chain, and remove excess hydrogen and electrons in the form of water,
Answer: Both tested the idea of spontaneous generation.
Explanation: hope this is right and have a great day or night!! :)
An organism that eats other organisms is called a <u><em>heterotroph</em></u>.
The correct answer is Island Arc. A string of islands known as an Island arc can form from the collision of two oceanic plates. Island arcs are curved chains of the volcanic islands, usually located in the deep ocean trenches on the convex side.