Around 1900, about what percentage of people in North America lived on farms?
A) 10%
B) 30%
C) 50%
D) 70%
C
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What is a hormone?
A. A new form of chemical insecticide waiting approval by the EPA B. A strong herbicide C. A species-specific chemical sex attractant D. A chemical that travels in the circulatory system and controls an organism's growth and development E. A safe, natural pesticide
What type of data did geographers use to determine and study the location and movement of the Deepwater Horizon oil spill in 2010?
A) Satellite images B) Topographic maps C) Shaded relief maps D) Microwave images
Cellulosic ethanol can be produced from ________
A) soybeans and corn B) old rubber tires and dirty diapers C) animal fats D) cornstalks and switchgrass
At present, the world population is growing at about 8.5 percent per year for a doubling time of 20 years.
Answer the following statement true (T) or false (F)