Which of the following best describes expiration? The elastic lung tissue recoils to its smallest length decreasing lung volume.
The diaphragm contracts, moves downwards, and expands the chest cavity.
Air flows in until the external and internal pressures are equalized.
The volume of the chest cavity increases and the lungs are stretched.

the total distance traveled by the car is

30km + 49km = 79 km .

answer: the correct answer for the fill in the blank is rods.

rods are the specialized photoreceptor cells that are present in the retina of human eye. they are responsible for vision in the night time ( also called scotopic vision). they have very low visual acuity and color distinguishing ability.

as they are responsible for vision in night time, therefore they are found predominantly in the nocturnal animals.

when both swimmers do work at the same rate. not lol what like the idiot

114 m/s             thats the correct answer