What is the main mechanism of wind erosion

Some astronomers have theorized that galaxies (matter) and antigalaxies (antimatter) have existed. Each galaxy contains about 1011 masses of the Sun. Calculate the total energy released if a matter-antimatter galaxy pair annihilated.

Follow the Missouri River from its source until it meets the Mississippi river. How does it flooding risk change as it flows east and south? What factors could cause that change?

1. The Declaration of Independence stated that all men were created equal and that they had natural rights that could not be taken away. How were these beliefs enforced in the early United States

Coordinates to Calcutta India

These two governments colonized most of the area in the region

Why are most quartz crystals not colorless (clear) ?

Why is the Gulf Coast important to Mexico's economy? It is a center for industry. It is the heart of the nation. Many crops are grown here. Petroleum is found here.

What are windy weather characters

Order these events from oldest (1) to most recent (4). Dense melted material sank to form the core. Earth's gravity captured gases to form the first atmosphere. Dust, rock, and ice were pulled together by gravity.

Which Communist Cambodian leader or movement caused the death of 1.7 million people through disease, starvation, and execution?