Glossary of Terms. Bronchus / Bronchi / Bronchioles. The airways of the lungs. When a person takes in a breath of air, the air travels through the nose or mouth, into the larynx, then into the trachea, which is the main passageway into the lungs. The trachea divides into a right and left main bronchus.
Plant and animal life, atmosphere and water are the major causes of weathering. Weathering breaks down and loosens the surface minerals of rock so they can be transported away by agents of erosion such as water, wind and ice. There are two types of weathering: mechanical and chemical.
Weathering is simply the physical breakup (disintegration) and chemical breakdown (decomposition) of a rock. The two processes work in concert to weaken and tear apart the rocky foundation so it can be more easily eroded.Each processes increases the effectiveness of the other.hemical weathering (decomposition). Processes of Chemical weathering. Chemical weathering breaks down minerals into different chemical components. Rocks, such as rock salt and limestone dissolve entirely, this is known as congruent solution.