(par 2.2.1. 6. ) Soil Characteristics
http://www.vaderstad.com/en/knowhow/soil-basic The building blocks of soil The soil that is cultivated to create a seedbed only consists to half of solid material, while the remainder consists of pores filled with water or air. Of the solid material, clay and organic material have the strongest influence on the soil and determine its tillage properties. Soil consists […]
(par 2.2.1. 6.1) What is rock?
http://www.eschooltoday.com/rocks/what-is-a-rock.html They are very tiny grains of different minerals, compressed together in chemical reaction to form a bigger mass. Rocks make up non-water part of the earth’s crust. A mineral and a rock do not mean the same thing. Minerals are made of individual or a combination of elements. A mineral is composed of the same substance […]
(par 2.2.1 ) A-biotic components & ecosystem-functioning
http://www.bcb.uwc.ac.za/Sci_Ed/grade10/ecology/abiotic/abiot.htm Abiotic components The way in which plants and animals grow and carry out their different activities is a result of several abiotic factors. These factors are light, temperature, water, atmospheric gases, wind as well as soil (edaphic) and physiographic (nature of land surface) factors. Light Light energy (sunlight) is the primary source of energy […]