Answer:
Explanation:
Charles Darwin & Alfred Russel Wallace. A visit to the Galapagos Islands in 1835 helped Darwin formulate his ideas on natural selection. He found several species of finch adapted to different environmental niches. The finches also differed in beak shape, food source, and how food was captured. Natural selection is the mechanism suggested by Darwin for evolution. Because resources are limited in nature, organisms with heritable characteristics that favor survival and reproduction leave more offspring than their peers, causing the traits to become more common over generations.
Historians refer to the rise of Andrew Jackson to the presidency as a “triumph of the white man’s democracy” because during the so-called “Age of Jackson” the right to vote was extended to nearly every white adult male, fueling the modern party system, and slavery became stronger in the south forcing thousands of Native Americans off their land.
The Democratic-Republican Party split over the presidential succession, when the party faction that supported the old Jeffersonian principles, led by Andrew Jackson, became the modern Democratic Party.
The President was Harry Truman
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The role of the President pro tempore of the Senate is mostly ceremonial as he is appointed to work in the place of a vice president when he is not available and take everything in control.
Mostly the power is in the hands of the other leaders and the senators but in the absence of the vice president the President pro tempore of the senate takes his place and certain duties are authorised which he can perform during that time.
