Benthos live in the benthic zone. The benthic zone is the lowest level in a body of water. Bentho organisms include things such as crustaceans and polychaetes
Answer:
The cilia is one of the things that act defensively in the respiratory system.
Explanation:
It propels a mucus-like liquid that covers the airway which traps pathogens (potentially infectious microorganisms) and other particles, preventing them from reaching the lungs.
Answer:
109,440 beats per day
Explanation:
75 times 60 (the amount of minutes in an hour) equals 4,560
456p times 24 (the amount of hours in a day) equals 109,440