Almost all geological activity, such as volcanic and earthquake activity, takes place at ________
a. convergent plate boundaries
b. divergent plate boundaries
c. transform plate boundaries
d. all of these choices
d
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The weak Sun paradox concerns
A) why solar output is currently so low. B) how life evolved on Earth, given that the Sun does not put out as much energy as many other stars. C) why the temperature of the Earth was as high as it was during the Earth's first billion years. D) the impact of the Maunder Minimum on current climate. E) none of the above
Intrusive igneous rocks are ____
a. coarse-grained b. clasts c. regolith d. rapidly cooled
On this map of southeastern Asia and adjacent areas, which site would have earthquakes along a subduction zone?
A. 1, in the Indian Ocean B. 2, in Tibet C. 3, near Japan D. 4, near the Tonga island arc E. 3 and 4
According to the fossil record on Earth, the earliest-known life-forms were primitive ________
A) bacteria B) plants C) shells D) reptiles