The water in the Buffalo River flows at an average speed of 5 km/hr. If you and a friend decide to canoe down the river at a distance of 15 km, how many hours will it take?

one centimetre is equal to 0.01 metres

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

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.