The discovery of radioactivity in the late 1800s changed that. Scientists could determine the exact age of some rocks in years. They assigned dates to the time scale divisions. For example, the Jurassic began about 200 million years ago.
The Coriolis effect (the deflective force of Earth's rotation) causes air to be deflected to the right of its path of motion in the Northern Hemisphere and to the left in the Southern Hemisphere. ... However, near Earth's surface, friction slows the winds.
Option A, The disagreed with the Three-Fifths Compromise.
The three fifths compromise came into being in 1787 for counting population in which the slaves were considered as three-fifths of a person. After the passing of confederation, each state was given the right to votes. Thus each one state got one vote irrespective of their population. The southern states demanded more votes as they had large population. When this matter reached the constitution, the southern states said they want each slave to be counted as one person in order to earn more delegates in Congress