D-walls and doors would represent the cell membrane
The greatest surface area for gas exchange is found in the Alveoli
Please state your full question next time.
If all the droplets were the same size, the droplet with the smallest charge <span>would fall most slowly through the apparatus. Basically, buoyancy is the same for all droplets but the electrical force would be different for each. The higher the electrical force the greater is the gravitational pull towards that droplet. Therefore, the droplet that has the </span>smallest charge<span> would drop most slowly.</span>
Vascular plants reproduce with seeds, nonvascular plants do not, therefore it is C.
