Define tectonic plate. What are two types of evidence that support the tectonic plate theory?

Which term defines the average number of people living within a square mile? A Birthrate B Population density C population distribution D doubling time

True or false: migration doesn't really effect population It's just a shifting of people from one place to another

Kepler's first law states that the orbit of each planet is an ellipse with the Sun at one focus. Which of the following statements describe a characteristic of the solar system that is explained by Kepler's first law?

How can a country depend less on oil

Can you write me a paragraph of who really invented the cotton gin

What 3 u. s cities serve as hinterlands for the rest of the world

Which of the following did Alexander Hamilton do

Is there human interference in the desert? If so what type?

Approximately how much of center Americans agricultural land is used for cattle grazing

Based on this map, which of the following countries gained independence most recently? A. Chad B. Congo C. Kenya D. Sudan