The proportion of people living in urban areas in the last 30 years has increased in
A. North America, South America, and Asia.
B. all continents but Europe and Africa.
C. all continents.
D. all continents but Africa.
Answer: C
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Why are supernatural explanations excluded from scientific theories?
A) Scientists dislike them. B) They provide too much data, thus drawing out experiments for too long. C) It is dangerous to study them. D) They cannot be observed or measured by scientific procedures.
The Phanerozoic Eon consists of the following three eras:
a. Hadean, Archean, Proterozoic b. Paleozoic, Mesozoic, Cenozoic c. Cambrian, Ordovician, Silurian d. Paleogene, Tertiary, Quaternary
Because the Indian subcontinent is still colliding with the Eurasian Plate, the Himalayas are still actively forming
Indicate whether this statement is true or false.
In the thermohaline circulation systems, surface water is ________
A) saltier and colder B) less salty, less dense, and warmer C) driven by winds from north to south D) warm and dense E) cold and dense