Today it is estimated that about ________ still survive by hunting and gathering rather than by agriculture
A) 5 million
B) 2 million
C) 750,000
D) 400,000
E) 250,000
Answer: E
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If the price of gas was $3/gallon at the pump, what would be the true cost of that gallon if you included the government subsidies and the military, health, and environmental costs?
A. $15 B. $5 C. $8 D. $2
Which would produce a more highly valued element, adding or removing a proton from the element gold?
What will be an ideal response?
The horizontal convection that transfers heat towards the poles is known as ________.
A. advection B. convection C. adduction D. conduction
Biomass energy represents a potential energy source that offers a number of obvious environmental advantages over other forms of energy sources. However, there are growing concerns over a number of possible negative impacts associated with bioenergy
Discuss two of these specific concerns. What will be an ideal response?