After the drought of the 1930's farmers in the Great Plains were encouraged to plant rows of trees across fields to decrease soil erosion. How would this reduce soil erosion?
A) The trees can serve as windbreaks to slow wind erosion.
B) The trees helped shade the ground, retaining moisture.
C) Tree roots would retard runoff and prevent erosion.
D) The trees had no effect; they were just used to improve the land appearance after the great depression.
A
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List the four stages of the policy life cycle, and show how the discovery of ozone layer destruction and the subsequent responses to it illustrate the cycle
What will be an ideal response?
A/An ________ is a series of large tanks that begin with anaerobic treatment and follows with plants and biological life forms that would live in various wetland areas
A) leach field B) eco-machine C) septic field D) septic tank E) wastewater treatment plant
Explain the discovery of the jet stream in the middle and upper troposphere
What will be an ideal response?
Average annual temperature:
