A single tree produces about 2.6 × 10² lb of oxygen each year. The Amazon rainforest has about 3.9×
t/?f=%2010%5E%7B11%7D%20" id="TexFormula1" title=" 10^{11} " alt=" 10^{11} " align="absmiddle" class="latex-formula"> trees. About how many pounds of oxygen are produced in the rainforest each day ?