Asmall population of a specific bird species lives on an island in the pacific ocean. all of the birds of this species have a crest of feathers on their heads. the color of the crest can be orange, yellow, or white. an individual's crest color does not effect its chance of survival or its reproductive success. a hurricane hits the island and all of the birds with orange crests are killed, as well as many of the individuals with yellow and white crests. this causes the gene for orange crests to be lost from the population. the loss of the gene coding for an orange crest in the bird population described above is an example of a. gene flow b. genetic drift c. genetic recombination d. natural selection

B. Genetic drift

Explanation:

Genetic drift is the evolutionary process that leads to changes in gene frequency in successive generation of a small population due to chance alone. It does not include natural selection or gene transfer. In the given example, a change event (hurricane) killed most of the birds with orange crest leading to removal of allele for the same from gene pool. So, it is an example of genetic drift.

a

explanation:

because it is and it's just life man

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.