B. are trying to use the same resources
Answer:
Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals. For this to happen, the parcel of air must be saturated, i.e. unable to hold all the water it contains in vapor form, so it starts to condense into a liquid or solid form.
Explanation:
Mushrooms and shelf fungi are classified as cup fungi.
It is an example of a withdrawal reflex.
