Roughly ___% of US citizens live in coastal counties and are thus vulnerable to rises in sea level
a. 10
b. 50
c. 83
d. 95
b. 50
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Moist air blows across warm water to colder areas inland. What might this produce?
A) decreased inland temperatures B) a cold air front C) a temperature inversion D) fog
Which of the following best matches the description?Competition between members of different species.
A. interspecific competition B. producer C. omnivore D. carbon cycle E. herbivore F. ectoparasite G. intraspecific competition H. nitrogen cycle I. denitrifying bacteria J. secondary consumer K. habitat L. nitrogen-fixing bacteria M. trophic level N. limiting factor O. biomass P. community
Regions of rugged, barren topography with prominent ridges and ravines resulting from gully erosion of soft material are known as ____
a. mesas b. plateaus c. pediments d. badlands
Trace elements in seawater are ________.
A. found in concentrations suitable for commercial use B. significant components of the total salt content of seawater C. necessary for many marine life forms D. in higher concentrations at lower salinities E. toxic to marine life forms