What is causing ozone thinning over Antarctica?

A. CFCs
B. PCBs
C. DDT
D. CPLs


Answer: A

Environmental & Atmospheric Sciences

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According to Newton, gravitational force between bodies is greater if the bodies have great

A. masses. B. distance between them. C. both of these D. neither of these

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Larval stages of starfish, barnacles, and crabs belong to the ________.

A. holoplankton B. meroplankton C. benthos D. phytoplankton E. nekton

Environmental & Atmospheric Sciences

Gross domestic product (GDP) is a measure of the gross progress indicator (GPI) plus benefits not included in market transactions, minus harmful environmental and social costs.

Answer the following statement true (T) or false (F)

Environmental & Atmospheric Sciences

Which of the following is most likely to occur at deeper (depth >10 km) levels within the earth?

a) ductile behavior b) brittle deformation c) fracturing d) only minor changes in minerals e) none of the above

Environmental & Atmospheric Sciences