What element do astrobiologists consider to be the most essential for the evolution of life?
A. hydrogen
B. carbon
C. oxygen
D. silicon
Answer: B
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Which process does not heat the inside of Earth?
A) radioactive decay of elements in the mantle and crust B) crystallization of iron in the core C) pressure applied by the weight of oceans D) volcanic action
Semi-permanent pressure cells:
A) have no impact on major weather patterns. B) can change substantially from summer to winter. C) stay in one place. D) maintain the same intensity year-round.
Which aspect of the local environment is the LEAST important for wine production?
A) climate B) soil types C) topography D) proximity to lakes or a river E) proximity to cities
Between World Wars I and II, The United States ________
A) Was a member of the League of Nations, and played a major role B) Was not a member of the League of Nations, and played a major role C) Was a member of the League of Nations, and did not play a major role D) Was not a member of the League of Nations, and did not play a major role