What is homology? To what are fins homologous?

Homology, in biology, similarity of the structure, physiology, or development of different species of organisms based upon their descent from a common evolutionary ancestor. ... A 19th-century British biologist, Sir Richard Owen, was the first to define both homology and analogy in precise terms.

We can use solar powered cars or ride bikes instead of cars that burn fossil fuels

Ha ha it happens bro