The bottom of an extension ladder should be set back one foot for _____
a. each foot of ladder length
b. each two feet of ladder length
c. each three feet of ladder length
d. each four feet of ladder length
d
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____________________ is a condition resulting from bacterial penetration into the frog and surrounding area.
Fill in the blank(s) with the appropriate word(s).
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? Designers typically consider the waste generated by the materials they choose.
Answer the following statement true (T) or false (F)
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When did plants first appear on earth? How do we know this?
What will be an ideal response?
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The major means of breaking down organic matter is through the action of:
a. Fermentation c. Toxins b. Microbes d. Water
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