2. the action of abrasion can best be described as
a. windblown sand cutting and polishing exposed rock surfaces
b. coarse sand particles rolling along the desert surface
c. sand being blown high into the air to cut and carve rock formations
d. the wind creating desert pavement

Abiology teacher asks students to give examples of genetic variations that support the idea that changes in a population’s environment affect genetic variation. which is the least supportive example? a.changes in genetics in human populationsb.antibiotic resistance in bacteria populationsc.pesticide resistance in garden insectsd.changes in the color of the peppered moth population in england