What is leachate?
A) methane gas that leaks from sanitary landfills
B) a mineralized liquid generated by water flow through landfills
C) hazardous waste left over from biochemical degradation of chemical wastes
D) an ash by-product of waste incineration
B
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Preservation is
A) the sustainable use and management of natural resources. B) maintenance of resources in their present condition. C) invention and diffusion of new agricultural practices. D) breeding programs to rebuild endangered species. E) recycling natural resources.
In general, biodiversity is ________
A) declining in the United States and around the world B) fairly evenly spread among all of the major groups of animals and plants C) accurately quantified for most ecosystems D) 75% plant species and 25% animal species
A parcel of air that is warmer than its surroundings
A) is more dense than its surroundings. B) will remain stationary. C) will sink. D) will rise. E) will move sideways.
Which of the following does NOT represent an exchange value?
A) U-Pick strawberries for $4 B) orange juice in the supermarket C) a salad eaten in a restaurant D) an orange picked and consumed E) apple pies for sale at a Farmers' Market