The answer to the question is B because he studied the finches for the fact that they lived on different islands and because of that the birds evolved their beaks to survive in their environment hope this helps
One of the main elements Darwin used to write "The Theory of Evolution by Natural Selection" was his observation of finches on the Galapagos island. Charles Darwin visited Galapagos during the 1830s and in there he observed multiple species of finches that differ in the shape of their beaks. This caught Darwin's attention who determined the shape of the beak varied according to the diet the species had. For Darwin, this shown all the finches derived from the same ancestor and their beaks and other features were the results of natural selection and evolution. Thus, Darwin wrote his theory by noting the differences in the beaks of closely related finches.
In magnets , there are north and south poles. According to the law of electromagnetism, it states that “like poles repel and opposite poles attracts” so when 2 magnets are brought together, the North Pole attracts the South Pole and charges leave the North Pole to the South Pole. Using coins, the force of attraction decreases with an increase in the metal hence if u put a coin, the force between them would decrease with an increase in the coins until a point where there would be no electromagnetic force hence no coin would attract...
Homeostasis affects the body's pH level, and therefore the health a person can maintain. The human body is designed to heal itself. This cannot occur unless it is in a state of homeostasis, so the body will do what is necessary to try to maintain this balance. ... The result is an acidic pH.