Which of the following is not a proxy used for climate?
A. Weather instrument data
B. Ice cores
C. Cultural records
D. Tree rings
Answer: A
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Which of the following correctly describes the linkages found in ATP?
A) one anhydride and two esters B) two anhydrides and one ester C) three anhydrides and no esters D) three esters and no anhydrides
Degradation and loss of coastal ecosystems is a major challenge of the 21st century
Indicate whether the statement is true or false
Which of the following is true of Earth's coastlines?
A) Most of the Earth's coastlines are relatively young and undergoing continuous change. B) The Earth's coastlines are among the oldest landforms on the planet. C) There are few inputs that directly affect the Earth's coastlines beyond tidal action. D) The erosion and deposition that shapes coastlines is caused by marine forces, alone. E) The Earth's coastline show a remarkable degree of similarity across the planet.
Plate tectonics and evolution, which are held with a high degree of confidence because of rigorous testing and verification, are examples of ________
A) guesses B) laws C) observations D) hypotheses E) theories