Please its urgent
*What happened when vapour con-
denses?
(a) Average veloocity of the molecules
increase
(b) Vapour pressure increases
(c) Average velocity of the mole-
cules decreases
(d) Vapour pressure remains constant.

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

Define the kinetic molecular theory

Apush or pull that moves or changes and object when to objects touch