Air pressure is the amount of pressure exerted by the air in a particular air mass. Humidity is a measure of the water content of the air mass. Clouds are tiny drops of water or ice that form in the atmosphere. Wind is a process of movement of air that occurs due to the uneven heating of the Earth's surface.
C. Rough ER. Proteins synthesized on these ribosomes collect in the endoplasmic reticulum for transport throughout the cell
