They are brought from colder regions e.g. the North and South poles where ice caps are melting to give cold water. Currents are due to the effect of wind on the water.
        
             
        
        
        
B - Senegal River. Borders Senegal and Mauritania
        
             
        
        
        
<span>Nuclear provides over half of low-carbon electricity.
</span>Nuclear power<span> plants currently operate in 31 </span>countries, from which most of them are in Europe. The statement that e<span>astern Europe uses nuclear energy for electricity production at a higher proportion compared to other parts of the world is true.</span>