Which one of the following concerning mid-ocean ridges is false?
A) Sediments include thick siliceous ooze deposits and sandy turbidite beds.
B) Terrigenous sediment coverings are very thin or absent.
C) They are sites for submarine eruptions of basaltic lava.
D) They are where young lithosphere is added to the edges of spreading, oceanic plates.
A
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In the 19th century, the famous physicist Lord Kelvin estimated the age of Earth to be much much less than its present estimate. What information did Kelvin not have to account for his error?
A. Lord Kelvin was not aware of radioactive decay, a source of energy to keep Earth warm for billions of years. B. Lord Kelvin knew only classical physics and had no knowledge of anthropological dating. C. Lord Kelvin never gave any estimate of the age of Earth. D. Lord Kelvin had no knowledge of radio waves for measuring distance and age of planets since they have not yet been introduced into science.
Most of Brazil's sugarcane is used to produce __________, a biofuel
Fill in the blank(s) with correct word
A habitat generalist is a species ________
A) that has highly specialized prey B) that cannot survive in a city or suburban area C) that relies on rural settings for survival D) that can take advantage of habitats that may have no counterpart in nature E) with a specific niche
Which of the following aquifers require a low permeability zone above it or below it?
A. artesian aquifer B. confined aquifer C. perched aquifer D. All of these choices are correct.