What causes the phases of the moon as observed from the earth?

a) filtering of the light from the moon due to the earth's atmosphere.
b) the tidal forces of the earth's oceans change the appearance of the moon.
c) change in distance of the moon from the earth as it orbits in an elliptical orbit.
d) the angle of light from the sun as it reflects off the moon and viewed from the earth's surface.

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.