An important characteristic of aquatic dead zones is a ________
A) high concentration of organisms resulting in extreme competition and finally the death of most
B) low concentration of oxygen
C) high concentration of urban development
D) low concentration of nitrogen and phosphorus nutrients
E) low concentration of keystone species
Answer: B
You might also like to view...
Which of the following is not a major factor controlling glacial erosion?
A) rate of glacial ice movement B) strength of the glacial ice near its base C) character of the surface beneath the glacier D) ice thickness
Explain why winds are stronger on one side of a tornado.
What will be an ideal response?
Which of the following minerals is most stable at the earth's surface?
a. hornblende b. quartz c. plagioclase d. olivine
Unlike corrosion, embrittlement results in the degradation of nuclear power plant materials from the
A) buildup up iron oxide after prolonged exposure to water. B) rapid expansion and contraction of super-heated and ice-cold water through most of the pipes. C) use of highly corrosive saltwater throughout most of the water pipes. D) bombardment of materials by neutrons produced by fission.