Oxygen isotope analysis measures the:
A) total oxygen present.
B) rate of oxygen depletion.
C) amount of radioactivity due to oxygen.
D) proportions of 2 different types of oxygen atoms.
E) oxygen content of sediment.
D
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A(n) ________ is issued when a tsunami has been detected and is moving toward an area
Fill in the blank(s) with correct word
Redwood forests exist in ____
a. taiga b. humid subtropical climates c. humid continental, hot summer climates d. Mediterranean climates e. polar climate regions
Subduction zones are downgoing convection cells in the earth but only carry oceanic material into the mantle
Indicate whether the statement is true or false
What would happen to a river delta if damming reduced the amount of sediment in the river?
a) Nothing much would change because the water flows through the delta. b) The delta would stop growing. c) River water quality would improve. d) The delta would continue to grow as long as the river flows. e) The delta would erode and subside below sea level.