Converging surface waters are areas of ________ and ________ productivity
A) downwelling; high
B) downwelling; low
C) upwelling; high
D) upwelling; low
B
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The diagram below shows that most of the reservoir and flux of the biogeochemical cycle called the sulfur cycle takes place in the lithosphere, so it is termed a(n)
A) metamorphic cycle.
B) igneous cycle.
C) sedimentary cycle.
D) rock cycle.
The average temperature on Earth has increased by over 2°C since 1980.
Answer the following statement true (T) or false (F)
Although organic farming originated in Europe, today, virtually all organic farms are in the U.S
Indicate whether the statement is true or false.
What is being proposed as an alternative biofuel to reduce deforestation in Africa?
A) Bamboo B) Eucalyptus C) Savanna Woodlands D) Tropical Hardwoods E) Switchgrass