During the __________, the amount of food produced each year increased dramatically because of developments in conventional crop breeding, new pesticides, and management techniques

Fill in the blank(s) with correct word


Green Revolution

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Draw a plan of the following wall assembly and then determine its total R-value, Rt. Starting from the outside face of the wall, the assembly consists of the following layers:

4-in. nominal (3-5/8-in. actual) brick veneer 2-in. air space (cavity) 0.75 -in.-thick extruded polystyrene sheathing 2 × 6 studs with 5-1/2-in.-thick fiberglass insulation 1/2-in.-thick gypsum wallboard (Note: In calculating the value of Rt, ignore the presence of wood studs and assume that the entire layer consists of fiberglass insulation.)

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Which of the following is NOT an abiotic disease factor?

a. parasitic plant c. soil acidity b. water deprivation d. herbicide

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The metal control hardware used to relieve stresses caused by expansion and contraction in large ceiling or

wall expanses in interior drywall systems is called a(n) _____. a. L-bead b. J-bead c. corner bead d. expansion joint

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A nation's ability to compete in the global marketplace has a direct bearing on the quality of life of its citizens.