Answer:
Thomas Nast
Explanation: American cartoonist Thomas Nast cemented the image of Uncle Sam in his own drawings during the 1870s. By the early 1900s
Because, when more species start to become extinct it disrupts the balance of the earth. For instance if spiders became extinct, the numbers of insects would exponentially grow. Which will become a problem for farmers, and more diseases would most likely occur.
D. Disruptive selection
Because that splits the normal distribution into 2 separate distributions, like dividing a normal curve into 2 new extremes.