Water Quality Part1

The water cycle is the ________.
unending circulation of earth’s water supply
Balance in the water cycle means that ______.
the average annual precipitation over Earth equals the amount of water that evaporates
Plants release water into the atmosphere through a process called ________.
Transpiration
If you were to examine the profile of a typical stream, you would probably find that the gradient is ________.
steepest near the head
What is the ultimate base level of a stream ?
the lowest point to which a stream can erode its channel
Which of the following does NOT erode a stream channel ?
A natural levee is __________.
One traditional flood control method has been to attempt to keep the stream’s flow within its channel be creating- ________________________.
artificial levees