Which job would likely be very common in a large city built next to an ocean harbor?

A farmer growing corn on large, flat fields.

A worker loading and unloading large cargo ships.

A miner digging for coal deep inside a mountain.

A park ranger who manages a forest far from the coast.

Why are river valleys, such as California's Central Valley, often excellent places for growing crops?

They are usually at very high, windy elevations.

They have fertile soil and easy access to water.

They are isolated and difficult for people to get to.

Their location near the desert is ideal for agriculture.

The land is often too flat for interesting buildings.

There is usually a lack of scenic views.

It is hard to find flat land for roads and farms.

The soil is often too rich and deep for construction.