Isolating T value

The probability R called risk that an exceedance occurs at least once in n successive years. R = 1 - (1-1/T)^n T= Return period EXAMPLE: What return period must a hydrologist use in designing a critical spillway to accept only a 10% risk that flooding will occur in the next 5 years? 0.10 = 1 - (1-1/T)^5 T=48.1 years HOW? Show me the steps to isolate T

global warming

If you were asked to become the minister or secretary in the Federal Government or United Nations in charge of doing something about global warming, what policies would you attempt to implement? Why?

Revolutionary changes in human culture; sustainability, stewardship, and sound science.

1. Revolutionary changes in human culture have greatly changed the relationship between humans and the environment. How have the Neolithic and Industrial Revolution impacted the natural environment, and what is meant by the Environmental Revolution? The recycling of elements is another vital functional process occurring in all ecosystems. Describe the biogeochemical cycles for carbon, phosphorous, and nitrogen. How have humans impacted these three cycles? The goods and services performed by natural ecosystems are essential to human survival. What is their overall value, and of what significance is it to measure this value. 2. Discuss fundamental concepts of Environmental Science:... click for more

Environmental Laws and Urban Sprawl

Select one of the following topics and explain your position and rationale in a convincing style . 1. It has been argued that many environmental laws and regulations are too costly and cannot be justified by their benefits. Do you agree or disagree ? Explain using specific examples where possible. 2. It has been argued that urban sprawl is the root of many environmental problems. Do you agree or disagree ? Explain .

What problems prevent the widespread use of hydrogen fuel cells?

What problems prevent the widespread use of hydrogen fuel cells?