Columnar jointing in lava flows occurs due to ____
A)pyroclastic welding
B)basaltic crystal formation
C)contact of the lava flow with sea water
D)the expansion of lava flow materials
E)cooling and contracting of lava flows
E
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Two out of every three people on Earth live within the top four world population clusters
Indicate whether the statement is true or false.
We are likely to feel colder on a cold, rainy day than on a cold, dry day because water ____ heat away from the body better than air does
A) condenses B) convects C) advects D) conducts
Mount Aconcagua in Argentina is the tallest mountain in the Latin American region at over 28,000 feet
Indicate whether the statement is true or false
If one wished to produce a map that focused on the continents and showed little of the world's oceans, then she/he should use a(n) ________ projection
A) large-scale B) equal-area C) interrupted D) conical E) azimuthal