To help diagnose generalized anxiety disorder, your health provider may: 1  Do a physical exam to look for signs that your anxiety might be linked to an underlying medical condition. 2  Order blood or urine tests or other tests, if a medical condition is suspected.
Runoff that occurs on the ground surface before reaching a channel is also called a nonpoint source. If a nonpoint source contains man-made contaminants, or natural forms of pollution (such as rotting leaves) the runoff is called nonpoint source pollution.
surface gets wet. The rest of the water is runoff. 4. How does vegetation slow and prevent sediment loss? Vegetation can slow and prevent sediment loss because it has a lower runoff rate so the sediment is less likely to be transported away. 5. How does vegetation allow greater infiltration? Vegetation allows greater infiltration because it is able to absorb more water and bring more water deep into the ground beyond the surface. 6. How does pavement or smooth rock runoff affect waterways?