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Energy Problems

1. Power Power is the rate at which Energy is used or being created. Its base unit is in Watts where 1W=(1Joule)/(1second). Power is the basis for rating the amount of energy appliances use over time, like a 100 Watt light bulb will use twice as much energy at any period of time than a [...]

Population Equations

In class we discussed human population growth rates in regards to 3 different equations. Each equation took into account certain aspects of population growth, including constant birth rate (CBR), constant death rate (CDR), annual growth rate (AGR), and doubling time. All three of these equations assist us in predicting future populations of any given area [...]

Population Biology: Growth Curves

Every Env. Sci. text presents two prototypical growth curves for a population: The “J” Curve (for exponential growth) The “S” Curve (for logistic growth) Each curve is drawn from a few base assumptions: The “J” Curve assumes growth rate is constant, and resources are unlimited.  Growth occurs at the intrinsic rate of growth (r).  So, [...]