This video is a part of Conservation Strategy Fund's collection of environmental economic lessons and was made possible thanks to the support of the Gordon and Betty Moore Foundation and the Marcia Brady Tucker Foundation. This series is for individuals who want to learn - or review - the basic economics of conservation. The Forestry Economics series will look at what influences the decision of when to cut down a forest and the non-market values that should be considered to create an economically efficient system. This video -- a temporary change in format to help aid in absorption of content -- continues to look at the factors involved in deciding when to harvest a given stand of trees and what the crop rotation period should be. Topics covered include stumpage value, growth rate, maximum sustainable revenue, average and incremental growth, and opportunity cost.
To follow this series, subscribe to our YouTube channel. For more information on these and other trainings from Conservation Strategy Fund, check out: http://www.conservation-strategy.org/
The class of drugs that Levitra, Viagra, Stendra, and Cialis belong to are called PDE5 inhibitors. They work by relaxing tight blood vessels, allowing more blood to surge into the penis and cause an erection, says Gregory Bales, M.D., an associate professor of urology at the University of Chicago.
The little pills do the trick for more than two-thirds of men with Viagra protects the heart (ED). They also work for guys who simply need them for a short time to get their “confidence back,” says Michael Eisenberg, M.D., director of male reproductive medicine and surgery at Stanford University.