C. There is a storm ?
Warm air rises and cold air drops because cold air is denser so when the warm air rises it when it collides with the cold air then comes condensation and clouds start to form and a storm can occur
I would pick younger and thinner, but follow your gut because I really don't know
Answer:
The answer is that they both happen
Explanation:
This is called facilitated diffusion(facilitated by membrane proteins) examples would be diffusion of ions such as sodium, potassium etc.
Hope this helps;)
C. Cycle of life.........................