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one in the high atmosphere allows more ultra-violet light to reach the surface of the earth where it can have serious biological effects on plants and animals, including humans. (3)____________ The Worldwatch Institute reports that global annual per capita production of grain dropped from 346 kilograms per person in 1984 to 313 kilograms per person in 1996. This is a drop of 9.5 % in just 8 years. We''ve all heard it said that per capita food production has been growing ever since the time of Thomas Malthus, and that this growth has proven him wrong. Since the late 1980s grain production has leveled off, so the continuing growth of populations means that the per capita production of food is declining. Perhaps Malthus was right after all. (4)_____________ Growth in the annual oceanic fish catch stopped in 1989, and since then the available fish per capita has been declining. For many of the world''s people, fish is a major source of protein. Most of the world''s major fishing areas are seriously depleted. The Grand Banks off of Newfoundland was one of the world''s major fisheries, with stocks of fish once thought to be unlimited. Now, these fish stocks are apparently almost gone. (5) _____________A report in January of 1997 from Stockholm indicated that by the year 2025, two-thirds of the world''s people will suffer from water shortages, and the report noted that the rate of use of fresh water was growing at twice the rate of world population. All of these problems are caused by population growth, and none of these problems can be "solved" if population growth continues. Today we hear many people talking about "Sustainability," as though we can accomodate continued population growth with something vague and ill-defined that is called "sust
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