Author Question: Radiocarbon dating of organic material may provide a climate record for up to ________ years before ... (Read 32 times)

genevieve1028 · **on:** Jul 14, 2018

Radiocarbon dating of organic material may provide a climate record for up to ________ years before present.

A) 10,000 B) 25,000 C) 50,000 D) 75,000 E) 150,000

Question 2

Which of the following is true of thermohaline circulation?

A) They are deep currents caused by differences in temperature and salinity.
B) The circulation has a definitive beginning and end, at the equator and poles, respectively.
C) Due to t heir depths, they carry limited volumes of water.
D) They travel at greater speeds than surface currents.
E) They are largely wind driven.