What is the name of a Phanerozoic era that means ancient life?
What will be an ideal response?
Paleozoic
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Springs may develop when:
a) An unconfined aquifer is drilled b) A confined aquifer is drilled c) The main water table intersects the land surface d) where a river flows across an area where the water table is beneath the surface e) where a lake is directly underlain by an impermeable layer
Minerals that do not contain silicon are classified as
A. silicates. B. clays. C. mafic. D. nonsilicates.
Which of the following correctly describes the composition of NAD+?
A) adenine, nicotinamide, a ribose and a ribitol linked by a diphosphate B) adenine, nicotinamide, and two ribose molecules linked by a diphosphate C) adenine, nicotinamide, and two ribose molecules linked by a triphosphate D) adenine, nicotinamide, and two ribitol molecules linked by a diphosphate
Atmospheric Pollutants
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