A. Core is the correct answer.
The correct answer is "dust storms".
First of all, rain, unless it is acid rain, is not a source of pollution although it is a natural phenomena. Pesticides and fossil fuels both cause pollution but they are a man-made phenomena not natural. Dust storms produce pollution in the air by swifting dust rendering the air almost unhabitable. This is a natural occurence and at the same time, pollutes.
Wheres the diagram, annd ill help you.
Mitochondria are involved in cellular respiration, where they produce adenosine triphosphate (ATP). ATP is the cells energy carrier or the cells energy store molecule.
The answer to your question is


The lateral line system is found in fish and is used to feel a vibration, movement, and pressure in the water. These senses are derived from the epithelial tissue which reacts to the movement near the fish.
Hope this helps!