Author Question: When a stalagmite has an oxygen-18 to ____________________ ratio that is low, the climate at the ... (Read 45 times)

arivle123

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When a stalagmite has an oxygen-18 to ___________________ _ ratio that is low, the climate at the
  time the stalagmite formed was relatively ___________________ _ Fill in the blank(s) with the appropriate word(s).



Question 2

Prior to the discovery of radioactivity in the late ___________________ _ century, geologists were
  able to develop a(n) ___________________ _ geologic time scale. Fill in the blank(s) with the appropriate word(s).




ciecieme

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Answer to Question 1

oxygen 16; cool

Answer to Question 2

nineteenth, relative



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