Diego
Download as PPT, PDF0 likes574 views
The document describes the different layers of soil and types of soil. It discusses the topsoil layer, which contains organic matter and supports plant and animal life. Below is the subsoil layer with fewer organisms and less organic matter. The deepest layer is bedrock, containing no life and few nutrients. The document also defines different types of soil as fertile, poor, or arid, and their ability to support plant growth. Finally, it provides definitions and examples of rocks and minerals.
Diego
- 1. THE TOP LAYER OF EARTH DIEGO AGUIRRE
- 2. SOIL LAYERS
- 3. TOPSOIL The soil is soft. There are roots, insects , moles, fungi and bacteria ( decomposers). It has a lot of humus, air and water
- 4. SUBSOIL The soil is hard.There are no living things but some roots of the biggest trees can reach this layer.It has little humus, air and water.
- 5. BEDROCK The soil is very hard. There are no living things.It has very little air and water and no humus.
- 7. FERTILE • It has a lot of humus and water • Many types of plants grow such us fruit trees and crops • It is in temperate forest
- 8. POOR • It has little humus and water • Only hardly plants grow there such us olive trees, oaks, vines, etc. • It is in savannahs and Mediterranean forest.
- 9. ARID • It has very little humus and water. • Only very hardly plants can grow such us cacti. • It is in deserts.
- 11. DEFINITION AND CHARACTERISTICS of the Earth. Rocks • Rocks are the solid part are made up of minerals • They are non – living things because aren ´t born, don´t grow, don´t reproduce and die. They are natural because people didn ´t make them.
- 12. ROCKS • Slate: it is used to make the roff of some homes. • Granite: it is made up of 3 minerals: quartz,mica and feldespate. • Marble: it is used for conscuction.
- 13. MINERALS • Gold: we use gold for jewellry. • Salt: we can eat it. • Copper: it is used to make pipes, for example.