(A) chemical leaching
(B) ex situ leaching
(C) beneficiation
(D) heap leaching
(E) in situ leachingFREE-RESPONSE QUESTION
By: Brian Palm, Catholic Memorial School, West Roxbury, MA
A.B. Dartmouth College, Hanover, NH
MSc Oxford University, UK
(a) According to the U.S. Department of Agriculture, in 1967, 62 million
acres of corn were planted. In 2016, that number rose to 93 million acres.
What is the percent increase in planted acreage over this approximately
50-year period of time?(b) Thomas Malthus described concerns about the different rates of growth for
the human population and its food production. Use a graph and words to
demonstrate your understanding of the trends he was predicting for both
food availability and the human population.(c) The recent era of farming and agricultural production is dramatically
different from the other types of subsistence farming commonly utilized in
the preceding 10,000 years. List TWO ways in which today’s approach
differs from earlier forms of agriculture AND describe TWO ways in
which this approach can cause greater environmental harm.(d) The development of the techniques that you described above is an
extension of the Green Revolution. This effort has helped to provide a
more consistent food source for our growing population. Despite these
efforts, food availability remains an issue for nearly one-third of the
world’s population. Name and describe one specific form of malnutrition.Answer