Question List for "Earth Science"

Pages: 1 ... 42 43 [44] 45 46 ... 138
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Geography » After two half-lives, there is ________ percent of radioactive material remaining. New
Started by oliviahorn72
 38 Feb 28, 2020
Geography » Modern geochronology studies recognize that most radiometric dates record a time when a mineral ... New
Started by jayhills49
 35 Feb 28, 2020
Geography » The era known as the "age of mammals" is the ________ era. New
Started by pepyto
 28 Feb 28, 2020
Geography » Assume that man's recorded history can be stretched back to 4600 years before the present. This is ... New
Started by Charlie
 44 Feb 28, 2020
Geography » An important absolute dating measure is the decay of 147Sm to 143Nd. What type of radioactive decay ... New
Started by student77
 69 Feb 28, 2020
Geography » A geologist observes abundant fossils of a distinctive trilobite species in a shale, but this ... New
Started by HudsonKB16
 145 Feb 28, 2020
Geography » There is geologic evidence that Earth has experienced ________. New
Started by arivle123
 58 Feb 28, 2020
Geography » You observe a distinct, red sandstone rock body about 50 m thick that is depositionally overlain by ... New
Started by ts19998
 90 Feb 28, 2020
Geography » Different periods of the geologic time scale are different in length. Why? New
Started by awywial
 42 Feb 28, 2020
Geography » As it relates to the names of the eras in the geologic time scale, what is meant by "zoic"? New
Started by kellyjaisingh
 60 Feb 28, 2020
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