A pierced lip is a sore that is open making it easier for infections to set in. Touch as less as possible and when you touch make sure your hands are clean. Most workplaces do not approve of piercing do take that into consideration while getting it done. Do be careful when you eat.
A V-shaped valley forms through a geological process called erosional downcutting in which a strong and fast moving river or stream erodes or cuts a path through rock. A V-shaped valley may also be referred to as a river valley.
delta form at mouth where stream load is dropped. decreases in velocity. as deltas grow out form the mouth. the slope decreases eventually the channel becomes choked with sediment. the river seeks a shorter, higher sloped path to sediment. the river seeks a shorter, higher sloped path to the sea. main stream channel divides into several smaller ones called distributors.