Methane hydrates may be a viable future energy source because
A) they are abundant and clean burning
B) they are easily obtained from their deposits
C) they are not fossil fuels and therefore will not contribute to the greenhouse effect
D) they are renewable resources
A
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Source separation differs from materials-recovery facilities in all but which of the following?
a. It has lower start-up costs. b. It yields cleaner and more valuable recyclables. c. It produces less air and water pollution. d. It provides fewer jobs per unit of material recycled. e. It saves more energy per unit of material recycled.
Which type of organism is responsible for harmful algal blooms, or HABs?
A) diatoms B) dinoflagellates C) coccolithophores D) foraminifera
Tsunami that reach the shallow water slow down due to ________.
A. friction with the bottom and internal turbulence B. changes in the density of seawater C. interference from seismic waves D. an increase in wavelength E. wind-blown waves crashing at the shoreline
________ biodiversity in an ecosystem leads to ________ long-term stability and productivity
A) Less; greater B) Greater; less C) Less; less D) Greater; greater E) Less; slightly more