Non renewable energy sources are fossil fuels like natural gas, coal and petroleum.
D.mesa mesa is table in spanish, technically mesa's arent supposed to have a slope.
<span>The four classes were the Brahmins (priestly people), the Kshatriyas (also called Rajanyas, who were rulers, administrators and warriors), the Vaishyas (artisans, merchants, tradesmen and farmers), and Shudras (labouring classes).</span>