Speleothems, like trees, have growth rings whose size and property reflect the conditions under which they formed
Indicate whether the statement is true or false
TRUE
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The major end product of chemical weathering is(are) _______.
a - clays b - sands c - silts d - talus e - airborne dust
The greatest source of both nitrogen and phosphorus entering Chesapeake Bay is ________
A) urban fertilizer runoff B) agriculture C) municipal and industrial wastewater D) septic systems E) natural sources
The country of Belize depends on lobster for a major portion of its income, along with fishing and tourism
Over the past 30 years the average size of an individual lobster has dropped, even as increasing numbers of Belizeans buy boats, build lobster traps, and enter the industry. This is an example of ________. A) overharvesting B) the results of an invasive species C) habitat alteration D) the effects of pollution E) the problems with monoculture
According to "Hubbert's peak," when will world peak oil production occur?
A. 2000 B. 1970 C. 1956 D. It won't peak until 2020