Answer:
The pharynx, or what we know as the "throat," is a dual duty body part. It has the job of both swallowing/ moving food to the esophagus. It is also the channel that allows air from your nasal/ oral cavities to flow down to your larynx, or voice box.
Hope this helps!
Chemical weathering is caused by rain water reacting with the mineral grains in rocks to form new minerals (clays) and soluble salts. These reactions occur particularly when the water is slightly acidic.
running water can be used as an energy source to produce hydroelectric power.