Whats an example of an economic diffusion (human geography)

The annual peak discharge data for the Des Moines River in Ohio is available for the last 124 years. The largest flood on this river record occurred in 1993. The recurrence interval of that flood is years.

5. At high altitudes is the sky above a deeper blue or a pale blue versus lower altitudes?

Although the state of Alaska has more square mileage than any other U. S. state, it is one of the least populated in the country. Which is the most probable reason for this

Why do temperatures in deserts drop so much at night after being so high during the day?

List 3 countries in America with the highest white/european population

Capital resources include A. all of the contributions of humans, be they physical or mental. B. only things like soil, forests, water, and minerals. C. all of the tools and machines used in industry. D. anything that is naturally made by Earth.

The Himalayan Mountain system, which includes outlying sub ranges, stretches across six countries - Afghanistan, Bhutan, China, India, Nepal, and Pakistan. True False

how do air masses affect the weather?

What is a problem Natives in both Bolivia and Peru face?

When is the Earth said to be at perihelion?