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.
In general, soil drainage is determined by particle size: the larger the particle size, the better the drainage. Compare the drainage of sand, sandy clay, and clay soils. A golf course designer, who is about to build a championship golf course, has come to you with a problem.