population pressure
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Young explains how he was able to overcome the pressure of being compared to legendary 49ers quarterback Joe Montana. The best strategy, he notes, was to focus on finding out how good he could get, not how much better he could be than Montana. This helped him move in the right direction and got his career going as well. Later on, he became known as the fiery leader of the 49ers.
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Figuring out the partial pressures of various gases in a container.
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The growth of populations is held in check by several factors. These can include predators, food and other resources, and density. Population density affects growth rate by determining how likely is it that an organism will interact with a member of its own species compared to an organism of a different species. Population growth studies rely on the mathematics of logs and exponents.
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World population will continue to rise until at least 2050. Environmental impact is the product of the number of people and how much of their income and technology is devoted to either consumption or conservation. So far, the balance is far at the consumption end and, globally, environmental problems are increasing. Environmentalism has not come close to counteracting the footprint of a billion extra people every dozen years. The only mass...more
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Families lived together in traditional China and sons remained on the land; division of family land led to tiny plots and rural poverty. Because labor was so cheap, the country did not urbanize or mechanize. The Communist government started out with a pro-natal stance, but after experiencing the famine of the Great Leap Forward, moved strongly to fertility control. Fertility declined rapidly in the 1970s, but to counter momentum, the One-C...more
