The 2012 Rio+20 conference on sustainable development generally agreed to
A) eliminate the use of all grains for biofuel production.
B) stabilize current levels hunger and malnutrition in the world.
C) help the countries most dependent on imported grains produce more food.
D) build dams and irrigation systems to help increase crop production in the developing world.
C
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Straight-line boundaries between states suggest that the boundary was based on natural features, such as rivers or mountains
Indicate whether this statement is true or false
Hydroelectric power offers great potential as a future energy source in the United States
Indicate whether the statement is true or false.
How deep should a water well be drilled?
A. To the water table. B. Above the water table. C. Below the water table.
Many of the macroscopic properties of a compound depend on
A) how the atoms of the molecules are held together. B) the mass of the constituent atoms. C) the number of nucleons present in the sample. D) the size of the sample. E) how the atoms absorb light and the shape of the orbitals.