How rapidly is farmland being converted to nonfarm use in the United States?
What will be an ideal response?
Each year, 1 million acres of prime farmland and 2 million acres of lesser-quality farmland are taken for nonfarm
use. That works out to about 4 square miles of prime farmland and 8 square miles of marginal farmland lost each
day—or about 960 total acres per hour.
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____ agents are added to concrete or grout to cause a slight expansion in it before it hardens.
A. Gas-forming B. Grouting C. Hardening D. Bonding
Determine the length of pipe needed in a 90-degree offset (centerline-to-centerline) of 30” with a take-off of .65” per fitting side.
What will be an ideal response?
What type of electrical current reverses its direction periodically?
A) Fission B) Direct current C) Random current D) Alternating current
For most areas a thatch layer less than ____ inch thick is desirable
A) 0.125? B) 0.5 C) ?0.1 D) 0.25