In the United States, ________ is the leading source of energy
A) natural gas B) coal C) oil D) wood E) nuclear
C
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How does vegetation help to stabilize slopes?
A. It takes up water. B. It decreases friction. C. It increases infiltration. D. It decreases infiltration.
During the colonial era, Japan reasoned that if _________________ could become so powerful, they should also have the potential to become powerful.
Fill in the blank(s) with the appropriate word(s).
This country has the greatest variety of weather in the world
A) Russia B) United States C) Australia D) China E) South Africa
Which of the following best matches the description?Interacting groups of different species in a given area.
A. producer B. intraspecific competition C. limiting factor D. habitat E. trophic level F. community G. ectoparasite H. secondary consumer I. denitrifying bacteria J. biomass K. omnivore L. interspecific competition M. herbivore N. carbon cycle O. nitrogen-fixing bacteria P. nitrogen cycle