Soil Erosion

The ______ ______ ______ has worked to reduce soil erosion since the dust bowl of the 1930's.

Wind breaks also provide food and cover for wildlife.

_____ __________ is causing what is left of the Earth to become smaller and smaller

we are not able to grow plants on three parts (75%) of the Earth's surface because it is ______.

Fruits and vegetables come from plants and plants grow on Earth's _______.

Computers are being used to help sense where water is needed.

Now we are only left with 1/8 part of the Earth and can only use 1/4 to grow food because 3 things take up the rest

we have a LARGE part of the Earth to grow things on

About _______ of the world's land is irrigated (watered).

What caused the dust bowl?

Irrigation is any means by humans to bring _______ to the land.

Irrigation does NOT cause any problems.

It takes to Earth 500-1,000 years for the Earth to grow _______ inch of top soil.

____ ______ contributes to pollution.

Plants and crops DO NOT need nutrients to survive.

What river's flooding did the ancient Egyptians use to irrigate (water) their land?

How much of the water in the USA goes towards irrigation?

You're going to get a 100% on your quiz!

Today, we've learned so many techniques to help us _______ (save) our soil.

the surface layer of soil

What are the 3 most common types of irrigation?

we can only use the topsoil of the Earth to grow things on

Soil irrigation is done by adding water to the soil.

George Washing Carver used crop rotation with ______ and ______.

What helps stop soil erosion by using their roots to hold the soil in place when it rains?

A ____ _______ can be created by planting trees and bushes to prevent wind erosion.

______ _______ prevents the soil from losing nutrients by planting different crops on the same field of land.

Contour farming prevents top soil from being eroded by planting using plowed _________ rows.