Answer:
Explanation:
Desertification:
The process of the land degradation in arid , semi - arid , and sub - humid areas because of the factors , human activities , climatic variations .
This process lead to persistent degradation of the dry land and ecosystem because of some variation in climate and man - made activities .
The major cause of Desertification are -
1. Overpopulation
2. Overgrazing
3. Deforestation
4. Unsustainable agriculture techniques
5. Climate change
6. Stripping of land resources .
7. Overgrazing of the land by the cattle and wild stock.
Based on the knowledge about radioactive elements, the decay of radioactive elements such as uranium creates heat especially in Earth's crust, where these elements are abundant.
<h3>What are radioactive elements?</h3>
Radioactive elements are elements which undergo spontaneous decay of their nucleus and in the process produce elements with smaller atomic masses with the release of radiation and heat.
Examples of radioactive elements include uranium and radium.
Therefore, the decay of radioactive elements such as uranium creates heat especially in Earth's crust, where these elements are abundant.
Learn more about radioactive elements at: brainly.com/question/18640165
Explanation:
Convection occurs in the Earth's mantle because it is the most efficient way for the Earth to cool or dispose of its deep-seated heat content. In general, heat can be transferred by conduction, radiation or convection.
It is 23.7 km south of welgemoed, western cape, south africa
Answer:
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