Your answer is C. Abrasion. Abrasion is a mechanical weathering, which uses physical forces to break down rocks without changing the chemical composition. The other answers are examples of chemical weathering.
Wear a mask or get a shot
<span>Meditation decreases sympathetic nervous system activity. A myocaridial infraction is just another word for heart attack and the sympathetic nervous system can play a role in causing a heart attack. The sympathetic nervous system can increase your blood pressure, heart rate, both of which can cause a heart attack, so meditation can keep these things at a low level.</span>
prophase is the phase where centrioles move to opposite poles
Sound is directed down the ear canal to the ear drum, and then via the tiny middle ear bones (the smallest bones in the body) to the inner ear, which houses the sensory organ of hearing. This organ rests on a membrane that vibrates selectively to different sound frequencies, and so acts as a sound filter, which sorts sound frequencies into groups. High frequencies produce maximal vibrations at the beginning of the coiled inner ear, and low frequencies do the same at the other end.