What term describes a farming practice where "steps" of level areas are carved into hills for farming?

What is the process of removing salt water from ocean water to make fresh drinking water?

These are generally unplanned results that are often negative

Houses built on poles to raise them of the ground in order to keep pests out

Clearing a forest of trees so it is no longer a forest is known as

Farming, growing crops, and raising animals for food are all examples of

Earthquakes or other movements of the earth's crust

Man-made waterways used for transportation and bringing water to crops

The movement of people into cities is called

When farmers use ditches to bring water to crops, they are practicing

When humans contaminate the environment with harmful substances like putting chemicals into soil or burning fossil fuels, this describes

The process of good land turning into desert is called

Wall of earth, rock and concrete used to make reservoirs (lakes)

These are planned results that are usually positive