Desmatosuchus was a crocodile relative that lived only during the Triassic Period. Horsetails are
plants that first appeared in the Triassic Period and still exist. Which of these organisms would be more
useful as an index fossil for the Triassic Period? Why?

airlines i think? or a cruise boat? does this work out for u? ?

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.

its true i dont know very sorry b much < 3 big fan

explanation: