What factors cause variations in climate and vegetation in the United States

How would a drought effect a youthful river

A group of 40 children attended a baseball game on a field trip. Each child received either a hot dog or a bag of popcorn. Hot dogs were $2.25 and popcorn was $1.75. If the total bill was $83.50, how many hotdogs were bought?

How many timezones does China have

Congruent figures have the same size and shape which polygons appear to be congruent

Johannes Gutenberg perfected what which made his print press possible

Explain why a baseball would go higher if it were thrown up from the surface of the Moon than if it were thrown up with the same velocity from the surface of Mars?

The arid expanse covering north africa is called

How did technology lead to geographic expansion and growth of cities in the midwest

What are living things use in water

What can teacher asks about Canada?