POPs such as dioxins and PCB's are transported into arctic ecosystems and food chains by
A) global air patterns and then deposited on snow from where they enter streams and plankton.
B) being eaten by fish when toxic materials are dumped into oceans.
C) local industries run by native people who use toxic chemical processes.
D) ocean currents, which contaminate local streams.
A
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Which of the following is NOT a problem facing Kolkata (Calcutta), India?
A) Electrical power is inadequate. B) Many streets are routinely flooded during the wet season. C) The economic base is declining. D) A mixed Hindu-Muslim population generates ethnic tension. E) It has poor quality educational institutions.
The hurricane center is MOST likely to be near location _____ on Monday afternoon.
A. I
B. II
C. III
D. IV
The bending of a wave in map view as it approaches a shoreline is called wave _______________
Fill in the blank(s) with correct word
The extent to which you consume ecosystem goods and services is described in terms of your ________
A) ecological footprint B) fertility rate C) biocapacity D) age-structure E) ecosystem function