What property of glacial ice helps climatologists to reconstruct the CO2 concentrations of the atmosphere during the past?
A) The amount of 16O in the water.
B) The ratio of oxygen isotopes in the ice.
C) The amount of volcanic ash frozen in the ice.
D) The contents of the air bubbles trapped in the ice.
D
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Rats are examples of ____________________ because they reproduce and disperse rapidly and produce many offspring to ensure survival of the species.
Fill in the blank(s) with the appropriate word(s).
According to our text, to date, no accidents have been associated with nuclear energy production in the world's core
Indicate whether this statement is true or false.
Most major landslides:a
are caused by earthquakes. b. are caused by volcanic eruptions. c. have natural causes. d. are due to human activity and poor engineering. e. none of the these
The capillary zone would be thickest in a soil composed of:
a. clay b. silt c. sand d. gravel