In which of the following ways is the study of tree rings and speleothems (cave formations) for understanding past climatic conditions similar?
A) The fossilized form of each is used for understanding past climatic conditions.
B) The chronology each can provide only dates back to a maximum of 1,000 years and are, therefore, only useful for relatively recent climatic trends.
C) Both are examples of macrofossils and can be used to determine plant and animal assemblages of bygone times.
D) Each are composed of organic materials and are therefore used solely for radiocarbon dating.
E) Each have growth bands, yielding evidence of the conditions under which they formed and grew.
E
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The polar jet stream flows in the tropopause, near the polar front and follows a curved path in the form of long waves
a. True b. False Indicate whether the statement is true or false
As the temperature of a parcel of air increases, its ability to hold water vapor ____
a. increases b. decreases c. remains constant d. increases then decreases
The Mohorovi?i? discontinuity ____
a. marks the boundary between Earth's crust and mantle b. has been reached by drilling in the Gulf of Mexico c. indicates a change in rock type from basalt to granite d. indicates a change in rock type from igneous to sedimentary
Nitrogen (N2 ) is
A) a key component of life, integrated into our bodies directly from the air. B) a product of the radioactive decay of a form of potassium in the crust. C) cycled through the environment via the activity of bacteria. D) now measured at 20.946% by volume in the homosphere.