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Author Question: According to the greenhouse effect theory, higher concentrations of ________ in the atmosphere ... (Read 13 times)

jon_i

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on: Jul 21, 2018
According to the greenhouse effect theory, higher concentrations of ________ in the atmosphere increase the earth's temperature.
 
  a. Oxygen c. Nitrogen
  b. Carbon dioxide d. Hydrogen dioxide

Question 2

The phylum Arthropoda consists of animals that have a hard external skeleton called an ___________________ __.
 
  Fill in the blank(s) with correct word


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Kedrick2014

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Reply #1 on: Jul 21, 2018
Answer to Question 1

B

Answer to Question 2

exoskeleton


jon_i

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Reply 2 on: Jul 21, 2018
Wow, this really help

debra928

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Reply 3 on: Yesterday
Excellent

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