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Author Question: The average C02 level in the earth's atmosphere is ________ ppm yet the common level injected into ... (Read 68 times)

mmm

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The average C02 level in the earth's atmosphere is ________ ppm yet the common level injected into greenhouses is ________________ ppm.
 
  Fill in the blank(s) with correct word

Question 2

What quality (color) of light stimulates seed germination?
 
  What will be an ideal response?



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angrybirds13579

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Answer to Question 1

about 400 ppm, 900-1200 ppm.

Answer to Question 2

Red.




mmm

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Reply 2 on: Jul 22, 2018
Gracias!


connor417

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Reply 3 on: Yesterday
Excellent

 

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