Provide a natural example of a system without an energy source. What will be an ideal response?


There is no natural example. All natural systems require an ultimate energy source.

Environmental & Atmospheric Sciences

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Risk assessment consists of two primary considerations:

A. risk and cost. B. time and costs. C. issues involved and time. D. risk and time.

Environmental & Atmospheric Sciences

Describe the role of meiofauna in nature. Why are meiofauna concentrated in the spaces between sediment particles?

What will be an ideal response?

Environmental & Atmospheric Sciences

Write a brief essay discussing the scientific method. What are the important steps in this method? Provide a specific

example of a concept that has been considered by this method and its results. What will be an ideal response?

Environmental & Atmospheric Sciences

The total amount of CO2 that photosynthetic organisms convert to organic carbon each year is called ________

A) carbohydrate synthesis B) GPP C) NPP D) NEP E) organic carbon assimilation

Environmental & Atmospheric Sciences