Rock formed in layers from deposition and solidification * Sedimentary Layers
Fossils
Diversity
Extinction
Fossil Record

How has the immigration of the 1990s affected the social and economic life of the united states?

Which of the following items would serve as a primary source for a historian studiying the american civil war

What was the goal of congress when it passed the sherman antitrust act to break up corporate trusts? a. to remove government regulation from businesses b. to return private competition to the marketplace c. to lower taxes on small and medium businesses d. to prevent politicians from investing in businesses e. to increase laissez-faire ideals in the marketplace