domingo, 22 de marzo de 2015

Physical and Political map of Asia



Phisical and Political map of America
















Chart of income per capita of the countries E.U.




Gross domestic product of countries in the world




Primary economic activity world map 





Types of farming





The farming system






Physical factors affecting farming 







Crop farming





Agriculture as a system








Importance of water


Water is one of those elements that have to do with the development of life forms . Water is essential for both plants 
and animals , humans and all known life forms may exist. 
The bodies of all 
living things are composed of water, being that this is what makes up the
muscles, organs and different tissues . Thus, the water becomes a very
important element for the existence of life.


Oil: for and aganist

Advantages oil
Versatile

Petroleum products: almost all petroleum are used to meet the energy needs of the world

Synthetic fertilizers: a high percentage of synthetic fertilizers come from oil

Disadvantages oil
High price

Ecological risk
Acid rain
Safe Storage
Transforming raw material
Global warming
Exhaustible energy source
Pollution























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