Based on Darwin's ideas of descent with modification and natural selection, which observation would best support the ide that increased competition causes changes in a species? (1 point)
A population of deer show an increase in antler size over time, which allows them to obtain more mares
during mating season
A population of rattlesnake goes extinct as the water resources in their environment dry up during an
extreme, prolonged drought
A population of artic foxes develop a brown fur color as warmer temperatures reduce the number of days of
snowfall in the area
A population of frogs develop greener skin after a hurricane blows away the white flowers in the
environment

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms

multiply it by 5 in order for you to understand i cant give an exact answer.

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.