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Desertification

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Text about desertification. Adapted from "Cultura Científica SM".

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biology
4º e.s.o.
history
geography
scientific culture
 Edad recomendada: 15 años
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Cecilia Silvestre
Cecilia Silvestre
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Desertification

Text about desertification. Adapted from "Cultura Científica SM".

Cecilia Silvestre
1

temperatures unprotected degradation quality exploitation human desertification Deforestation climate vegetation seasonal rain

It has been calculated that 24 , 000 million tons of arable soil are lost worldwide every year . The loss of this soil causes desertification , a process of land in arid and semi - arid areas produced by climatic variations or by activities . It usually begins with soil degradation , or deterioration of its and fertility , which reduces and culminates in soil erosion . It is due to different causes , including change and abusive land use .
Climate change is causing to rise , which means that annual tends to be between 200 and 600 mm and with a strong character .
Abusive or inappropriate land use causes with activities such as :
- or abusive cutting down of forests to use their wood or to replace them with agricultural crops .
- The overexploitation of crops or intensive , which impoverishes the soil and degrades it .
- Overgrazing or excessive consumption of pasture by livestock , which leaves the soil .

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