The lag of the maximum is exhibited when:
A) the highest levels of solar radiation are not received until late afternoon.
B) the warmest annual mean temperature occurs in the year following maximum CO2 emissions.
C) the maximum temperature for the day occurs several hours after maximum solar radiation receipt.
D) the maximum temperature during a year does not occur until autumn.
C
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What type of basaltic feature is shown in this photograph?
A) Vesicles
B) Volcanic bomb
C) Aa lava flow
D) Pahoehoe lava flow
E) Pyroclastic flow
Tropical oceans are generally characterized by low net primary productivity. What are three environments that are exceptions to this and what factors contribute to their higher productivity?
What will be an ideal response?
Erosion and deposition depend on
A. gravity. B. the properties of rock. C. energy from the Sun. D. all of these
The radioactive element Unobtanium-189 (Ut-189) decays to the stable element Dilithium-171 (Di-171). The half-life of Ut-189 is 10 million years. Using a very sensitive atom-counter instrument, you determine that a mineral sample has 150 atoms of Di-171, and 50 atoms of Ut-189. Assume that no atoms have been lost due to metamorphism over the lifetime of the rock.Use this information to answer the following question.What is the age of the mineral?
A. 10 million years old B. 20 million years old C. 30 million years old D. 40 million years old