Which aquatic ecosystem has the highest net primary productivity?
A. open ocean
B. rivers and streams
C. hydrothermal vents
D. continental shelf
E. estuaries
Answer: E
You might also like to view...
In carrying out the policy cycle, which of the following groups would probably use intensive media campaigns or even stage a protest?
A. Public interest groups B. Wealthy or powerful individuals C. Industry associations D. Labor unions E. All of these would want as much publicity as possible
Describe how salt domes were formed in the Gulf of Mexico. What will be an ideal response?
Match the volcanic hazard with its definition
A) Substances like CO2, SO2, Cl, and F that can result in climate change and be hazardous to human health B) Large volumes of ash precipitating from eruption cloud C) Fluid mudflow of volcanic debris D) Hot, fast-moving body of expanding gas and ash that hugs the flanks of the volcano E) Destructive sea wave triggered by powerful explosions or landslides into large bodies of water 1) Pyroclastic flow 2) Lahar 3) Tsunami 4) Ash Falls 5) Volcanic Gases
If fishing demands continue at the current rate, by which year will the world's major fisheries collapse?
A. 2100 B. 2050 C. 2125 D. 2075