Despite the dry climate of MexAmerica, one of the most dangerous natural hazardous in the region is ________
Fill in the blank(s) with correct word
flooding
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Which of the following best matches the description?Comparative percentages of different age groups within a population.
A. dispersal B. immigration C. carrying capacity D. death phase E. density-independent factor F. population density G. emigration H. density-dependent limiting factor I. biotic potential J. r-strategist K. age distribution L. environmental resistance M. lag phase N. K-strategist O. exponential growth phase P. stable equilibrium phase
Radium in groundwater
A. makes the water unsafe for bathing. B. occurs only near leaking radioactive-waste dumps. C. can be removed by water softeners. D. All of the choices are correct.
The four states of matter are solid, liquid, gas, and ____________________. Fill in the blank(s) with the appropriate word(s)
Funding for Superfund toxic waste sites ________
A) is no longer necessary because by 2010 all sites had been cleaned and restored B) is currently paid by polluting industries C) has become the responsibility of taxpayers since 2004 D) is a portion of the EPA's budget E) has been eased because the costs of cleanup have diminished