The diagram above shows how a cochlear implant works.

Then James has difficulty in hearing but the cochlea implant cannot help him to restore hearing.

Which of the following ear defects does James most probably have?

A. The auditory canals are blocked.
B. The eardrums are damaged.
C. The ear bones degenerate.
D. The auditory nerves are damaged.

The negative impacts of nonnative species generally outweigh the positive impacts

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .

Explain how mendel kept his pea plant from self pollination