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Author Question: Most cratons date to the A) Precambrian eon. B) Paleozoic era. C) Devonian period. D) ... (Read 99 times)

crobinson2013

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on: Jul 14, 2018
Most cratons date to the
 
  A) Precambrian eon.
  B) Paleozoic era.
  C) Devonian period.
  D) Paleocene epoch.

Question 2

In food webs, toxic chemicals tend to accumulate and concentrate most in the
 
  A) top carnivores.
  B) herbivores.
  C) omnivores.
  D) autotrophs.


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Fayaz00962

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Reply #1 on: Jul 14, 2018
Answer to Question 1

A

Answer to Question 2

A


crobinson2013

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Reply 2 on: Jul 14, 2018
Excellent

xiaomengxian

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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