How many times during the last 2.6 million years (the Quaternary Period) has Earth's climate cycled back and forth between glacial and interglacial periods?
A) 11 times
B) more than 100 times
C) 4 times
D) 22 times
D) 22 times
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An exothermic reaction is a reaction
A. where there is a net adsorption of energy from a reaction. B. that requires heat as a reactant. C. where the products have more energy than the reactants. D. all of the above E. none of the above
the energy emitted from the Sun is a product of ______.
a - geysers b - radioactive decay c - fusion d - fission e - none of the above
On 20 February 1943, a new volcano named ________, a scoria cone, was born when an eruption rose up through a farm field near a village in Mexico.
A. Mt. Kilimanjaro B. Mt. St. Helens C. Mt. Popocatepetl D. Paricutin E. Mt. Fuji
What is a sea stack?
A. A ridge of sediment in the surf zone deposited during heavy storms in the winter B. An erosional remnant of a headland C. A conical pile of loose sediment deposited by the longshore current D. An ancient volcano that stick up above the high water mark