What are the advantages of strip cropping? What will be an ideal response?
It helps catch soil washed off of bare areas, and it provides some wind protection.
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Surface water extends to a depth of about ____
A) 1,000 meters B) 600 meters C) 200 meters D) 50 meters
The windward side tends to be the steepest side of dunes
Indicate whether the statement is true or false
Why is the molten metallic outer core and the magnetic field important to life on Earth?
A) If we did not have the molten core and the magnetic field, the earth would not have plate tectonics and would be covered entirely by water. B) If we did not have the molten core and the magnetic field, we would be bombarded by meteorites and we would not be able to hold the moon in orbit. C) If we did not have the molten core and the magnetic field, we would be bombarded by cosmic rays that would strip away our atmosphere. D) If we did not have the molten core and the magnetic field, the atmosphere would be very different with either too much ammonia and methane or too little oxygen and water.
In 2003, the largest source of immigrants to Canada, ________ percent, came from the People's Republic of China, compared with a meager ________ percent from Great Britain
A) 16; 2.3 B) 50; 22 C) 22; 5.5 D) 95; 1.6