Which parts of the ear vibrate when hearing sound?
i auditory nerves
ii ear drums
iii ear bones
i and ii
i and iii
ii and iii
i, ll and iii

II

Explanation:

EAR DRUMS AS IT IS THE MAIN PART OF OUR LISTENING NATURE

i think that d. wind is the answer.   i missed the question when i answered a. currents.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.