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Author Question: Indications of past climates in tree rings are determined by examination of the:a. thickness of ... (Read 144 times)

Starlight

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on: Jul 13, 2018

Indications of past climates in tree rings are determined by examination of the:a.
   thickness of growth rings
  b. density of growth rings
  c. presence of frost rings
  d. all of the above
  e. only a and b



Question 2

A high concentration of oxygen 16 found in the ice caves of Antarctica and Greenland would
  indicate __________ at the time the ice was formed.
  a. cold air temperatures
  b. mild winters
  c. intense ultraviolet radiation
  d. the caves were under the ocean



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orangecrush

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Reply #1 on: Jul 13, 2018
Answer to Question 1

d

Answer to Question 2

a


Starlight

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Reply 2 on: Jul 13, 2018
Gracias!

kjohnson

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Reply 3 on: Yesterday
Wow, this really help

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