A trait that is favorable in one environment may be useless or detrimental in another. True
False

Biological fitness is the ability of an individual to survive and reproduce in a specific environment.
True
O False

links? do you have a link? i don't see anything?

the answer is c.

by: nicholas dooley

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.