By current research, aboriginal people first came to the North American continent about when?
A) 1,400 to 5,000 years ago
B) 14,000 to 50,000 years ago
C) 140,000 to 500,000 years ago
D) 1,400,000 to 5,000,000 years ago
B
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People in urban areas tend to have better access to medical services, family planning and recycling facilities than people in rural areas.
Answer the following statement true (T) or false (F)
A car-wash system consumes 60 gallons of water per wash. Assuming that a person washes her car once every week, what is the total amount of water consumed annually by this activity?
What will be an ideal response?
All reasonable projections for world population in 2050
A) assume a rising fertility rate. B) reflect projections of fertility but not mortality. C) conclude that the population will be higher than today. D) include estimates of migration patterns.
Which of the following conditions describes a mesoscale convective complex?
A. tornadoes that cause a great deal of damage B. a rapidly rotating tornado cyclone inside a massive thunderstorm C. a complex display of lightning from distant thunderstorms D. individual thunderstorms that grow into a large, long-lasting weather system