Air is then breathed into the windpipe and lungs, while the mucus is swallowed (figure 3). Other. Other interesting structures associated with the nasal and sinus tract: Tear duct (called the nasolacrimal duct): drains tears from the inside corner of the eye into the nasal cavity (figure 1).
Human activity is the main cause of soil degradation. Agriculture plays a large part in soil degradation, especially clearing, irrigation, the spreading of chemical fertilizer â¦ s and pesticides, overgrazing and even the passage of heavy farming equipment. Tillage and the clearing and deforestation of large plots of land also lead to soil degradation.
Page 1 of 4 Chapter 3 Erosion and Deposition Changing Earth's Surface Erosion is the process by which natural forces move weathered rock and soil from one place to another.Gravity, running water, glaciers, waves, and wind all cause erosion.The material moved by erosion is sediment. kettle that is filled with water is called a kettle lake. I. Erosion and Deposition A. Erosion: Process by which weathered rock is removed B. Deposition: Process by which sediments are laid down in a new location C. 5 Agents of Erosion i. Gravity: Mass Wasting 1. Rapid: Landslides and Mudslides 2.