When assessing energy resources, it is helpful to use a measure called EROI, which is ________
A) money invested in extraction and processing minus income from sales
B) energy returned minus energy invested
C) energy returned divided by energy invested
D) amount of energy invested minus heat released into the environment
E) energy returned plus energy invested
C
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Which of the following is not a significant factor contributing to the damage caused by an earthquake?
A. the duration of the vibrations the B. the proximity to a plate boundary C. the types of ground materials that are built on in the region D. the construction techniques and materials used in the region
What enhances the ocean's buffering capacity?
A) The amount of dissolved inorganic carbon present B) The amount of acid already present in the ocean C) The amount of dissolved organic compounds D) None of these choices
Which type of front typically advances the fastest?
A. cold front B. warm front C. cold occlusion D. warm occlusion E. stationary front
If the lowercase letter k appears at the end of an air mass identification code, what can be said about the changes likely to happen within that air mass?
A) The air mass will not undergo any air mass modifications. B) The air mass is likely to become more stable. C) The air mass is likely to become more unstable. D) The expected air mass modifications are impossible to predict.