Q5.10. The growth in the global Ecological Footprint since 1961 is largely a result of an increase in the global carbon footprint. As fossil fuel combustion has increased, what subsequent change has resulted in the rise of our global carbon footprint

answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.

(nitrogen fixation) will be your answer sorry if im wrong