Biology, 07.07.2019 00:00 keaganaplin
Which of these energy resources is likely to be depleted if these trends continue? a) coal b) timber c) petroleum d) natural gas
Answers: 1
Biology, 22.06.2019 23:00
Waste water from industries and domestic sources can be treated by chlorination or ultraviolet radiation. there are pros and cons to using either chlorine or uv radiation to kill harmful microorganisms. what is one reason chlorination would be preferred over ultraviolet radiation? a) chlorine only eliminates visible impurities and is ineffective against microorganisms. b) chlorine not only kills bacteria but provides a residual effect on returning microorganisms. c) uv radiation can be used only to treat drinking water and is ineffective in treating waste water. d) ultraviolet radiation is more effective
Answers: 2
Biology, 23.06.2019 05:30
Which process would most likely cause metamorphic rocks to change into sediments or magma? check all that apply. a.compaction b. cementation c. erosion d. heating e. weathering
Answers: 2
Which of these energy resources is likely to be depleted if these trends continue? a) coal b) timbe...
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