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…
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…
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,…