What role does the outer ear play in hearing?

a.) captures sound waves

b.) removes high and low sound waves that are harmful

c.) transmits sound waves from air to fluids

d.) converts sound waves into electrical signals

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits