Currently there is extensive recycling of which of the following polymers?
A) high-density polyethylene
B) polystyrene
C) both a and b
D) neither a nor b
A
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The primary difficulty that must be overcome in the use of desalination plants to provide fresh water is __________.
-the destruction of marine life by the process -high maintenance costs for the plants -poor quality of water produced by the plants -the high cost of energy involved -environmental damage from the brine effluent
In developed countries around ________ percent of workers are engaged directly in farming, compared to around 50 percent in developing countries
A) 2 B) 5 C) 10 D) 15 E) 30
Describe the physical geography of U.S. settlement between 1790 and 2010 and identify pull factors or other conditions that stimulated this westward movement
What will be an ideal response?
Agribusiness in the core economies has helped the small, family farmer remain competitive in the food chain
Indicate whether this statement is true or false