Many United States weather maps throughout the year will look similar to the one above. Which explanation best describes the cause of this phenomenon ? Evaporation of ocean water creates fronts that approach the United States from both coasts . The west coast of the United States is normally colder than the east coast . Ocean waves cause movement in the air masses in the same direction . The unique shape of the United States land mass cause these weather patterns to occur regularly

d.

explanation:

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.