Which of the following sites near a volcano might be relatively less dangerous?
A) A site that is within the shelter provided by the volcano's central crater
B) A site on a ridge as opposed to a site in a valley
C) A site protected by steep slopes of the volcano
D) A site where rocks have been weakened by hot volcanic fluids
E) All of these are correct.
B) A site on a ridge as opposed to a site in a valley
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Which of the following might best explain the reason why electrons are restricted to certain energy levels in an atom?
A) They behave like restricted waves and are self-reinforcing. B) They are travelling at very high speeds. C) They are interacting with the light around the atom. D) They are out of phase and self-destruct when outside of distinct energy regions. E) They behave like chaotic waves of alternating frequency.
The largest trading block in the world is the ________ ________
Fill in the blank(s) with correct word
Unregulated populations tend to increase by ________
A) exponential growth B) emigration C) immigration D) pyramidal growth E) linear growth
Which of the following is NOT a part of the process of natural selection?
a. Organisms struggle to survive. b. Organisms limit the number of young they produce. c. Individuals vary in their genetic characteristics. d. Some individuals are better suited to their environment than others.