By tar, I think you mean nicotine. (I Hope). It affects the nerve signals that regulate breathing.
Enzimes reduce the energy activation of a reaction
Answer:
We can see some of the most important patterns Darwin noticed in distribution of organisms by looking at his observations of the Galápagos Islands off the coast of Ecuador. Darwin found that nearby islands in the Galápagos had similar but nonidentical species of finches living on them.
