*Please Help* Which of the following organisms would you expect to be most abundant in the tallgrass prairie ecosystem? A. Grasses and flowering plants
B. White-tailed deer and cottontail rabbits
C. Bobcats and Coyotes
D. Harriers and kestrels

A

Explanation:

Prairies are unique ecosystems dominated by grasses and other non-woody plants called forbes. ... A prairie ecosystem includes all the living components-- plants and animals--and all the nonliving components-- sun, water, fire, soil, and--nutrients.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).