Nearly all transportation systems rely on this energy source
A) coal
B) oil
C) wood
D) solar energy
Answer: B
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The geologic time scale was originally based upon ____
a. changes in Earth’s biota b. the theory of organic evolution c. the isotopes of minerals d. absolute ages of rocks based on radiometric age dates e. geographic mineral locations
Which of the following is believed to be the reason for the emergence of a stage 5 in the epidemiologic transition?
A) A reemergence of infectious and parasitic diseases B) CDR rises because more of the population is elderly C) Rich countries will be more generous to poor countries D) International organizations will become too powerful to control E) Emerging countries will take over the control of world resources and keep it all to themselves
Accelerographs are instruments that provide:
a. a record of only strong earthquake motion near the epicenter b. a continuous record of seismic waves for all events c. records of only P waves d. records of only S waves
Asteroids large enough to destroy most life on Earth have been documented to strike the planet in the past.
Answer the following statement true (T) or false (F)