Aspecies of birds exists in stasis for many thousands of years. suddenly, their environment changes, causing their primary tree of sheltering choice to die. to adapt to their new environment, the birds must nest in trees that are much higher, requiring more wing strength. some birds die. the remaining birds have the wing strength necessary for the new habitat and thus, return to a state of stasis. this is an example of

Its D punctuated evolution

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )