The most abundant gas released by volcanic eruptions is:
a. hydrogen sulfide
b. carbon dioxide
c. water vapor
d. nitrogen
c
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Polyface Farm in the U.S. state of Virginia raises beef, chickens and pigs. A particular practice on Polyface Farm is to bring chickens into a pasture after the cows have eaten the grass
The chickens eat the insect grubs that are found in the cow manure. While the chickens fatten up on the insect grubs, they also produce waste which in turn fertilizes the grass the cows will later eat. Explain this process in terms of sustainable agriculture and the basic principles of sustainability. What will be an ideal response
The American idea of a dream home in the suburbs and a car in the garage is a result of
A. advertising and government policies. B. advertising. C. government policies. D. concerns for the environment.
Which of the following best matches the description?Forest harvesting method in which patches of trees are clear-cut among patches of timber that are uncut.
A. patchwork clear-cutting B. mutation C. reforestation D. extinction E. speciation F. habitat management G. cover H. species diversity I. biodiversity J. endangered species K. threatened species L. selective harvesting M. clear-cutting
If stormy weather were approaching, the pressure tendency would probably be ________
A) falling B) rising C) steady D) none of these