Slide 1 15.2 Objectives Distinguish between traditional and modern agricultural techniques. Describe fertile soil. Describe the need for soil conservation. Explain the benefits…
Slide 1 Crops and Soil Arable land is farmland that can be used to grow crops. The Earth has only a limited area of arable land. But, as the human population continues to…
Slide 1 The Living Earth Slide 2 Slide 3 Industrial chemicals released into the atmosphere have damaged the ozone layer in the stratosphere Slide 4 The Earth’s atmosphere…