To meet the goals of sustainable agriculture, modern farming is turning to increased use of
A) pesticides.
B) herbicides.
C) chemical fertilizers.
D) contouring and crop rotation.
D
You might also like to view...
Hydrogen fuel cells
A. rely on direct energy from the sun. B. use geothermal energy to produce electricity. C. combine hydrogen and oxygen gas to produce electricity and water vapor. D. require complex carbohydrates as starting materials. E. break apart water molecules and use the hydrogen as energy.
Ephemeral streams ________
A) are a major agent of erosion in desert regions B) are a major agent of erosion in areas of ground moraine C) flow all the time D) are limited to rainshadow deserts
Alkanes belong to which class of hydrocarbons?
A) alkali B) aromatic C) saturated D) unsaturated
Desertification results from
A. lowering of the water table. B. removal of native vegetation. C. plowing. D. All of the choices are correct.