Ms. smith told her students to do 30 jumping jacks without stopping. when everyone had completed the jumping jacks, she asked the students to look around and observe each other. she said, "what do you notice about each other that is different from before you did the jumping jacks? " the changes that the students observed, rapid breathing and sweating, would be classified as a system to a change in a limit response stimulus feedback mechanism

the answer would be..

b. sucking

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.