The bacteria Bacillus thuringiensis, or Bt, is toxic to:

a. Mammals c. Insects
b. Birds d. All answers are correct.


C

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A) Lean air B) Engine air C) Recirculate air D) Fresh air

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a. 2" × 8" lumber b. 2" × 6" lumber c. 2" × 4" lumber d. 2" × 2" lumber

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a. 0 b. 00 c. 1 d. 2

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