B)oval window
C)ear canal
D)Hammer
Answer: cochlea
The cochlea is responsible for turning sound waves which is what makes you hear.
B.a homogeneous mixture and a suspension
C.a heterogeneous mixture and a solution
D.a heterogeneous mixture and a suspension
Answer is: D.a heterogeneous mixture and a suspension.
Suspension is a heterogeneous mixture (solute particles do not dissolve), that contains solid particles (for example nickel sulfide or NiS) sufficiently large for sedimentation.
The internal phase (solid nickel sulfide) is dispersed throughout the external phase (water).
Another example of a suspension is sand in water.