The chain of processes in a system that operate in repeating or changing cycle is called:
a. positive feedback.
b. negative feedback.
c. steady state.
d. feedback loop.
D
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Why are oxygen and water the two main components involved in chemical weathering?
A) They are extremely rare. B) They are among the most abundant and easily bonding molecules on earth. C) They are very good at it, so they do it a lot. D) Nothing else can chemically alter minerals.
Consumption in phytoplankton usually exceeds carbohydrate production which is why we end up with oxygen
Indicate whether the statement is true or false
Use your knowledge of plate boundaries to answer whether an earthquake is likely or unlikely to occur at the location of the red circle.
A. Likely B. Unlikely
Transnational corporations have been able to become global in scale because of ________.
A. differential regional labor costs B. cheaper forms of transportation worldwide C. improved global communication D. newly-available world markets