Environmental Studies

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Which of the following best describes the principle of faunal succession? A) Rock layers will ... Started by Sufayan.ah	1 Replies 118 Views	Jul 16, 2018 by daiying98
What is an index fossil? A) An organism that existed for a vast period of time and is ... Started by big1devin	1 Replies 105 Views	Jul 16, 2018 by jasonq
________ is a technique where the decay rate of radioactive isotopes is measured and used to ... Started by tingc95	1 Replies 68 Views	Jul 16, 2018 by princessflame2016
You are trying to determine the age of a lava flow using an isotope with a half-life of 1.5 million ... Started by bb	1 Replies 196 Views	Jul 16, 2018 by wilsonbho
The fossil record is biased toward preserving organisms with hard parts. Indicate whether this ... Started by rayancarla1	1 Replies 97 Views	Jul 16, 2018 by akudia
Hadean is an informal term used by many geologists to refer to the earliest interval of Earth's ... Started by sam.t96	3 Replies 80 Views	Jul 16, 2018 by 1_Step_At_ATime
All isotopes are unstable. Indicate whether this statement is true or ... Started by vicky	1 Replies 65 Views	Jul 16, 2018 by pikon
Which era are we currently in? A) Mesozoic B) Precambrian C) Paleozoic D) ... Started by jc611	1 Replies 72 Views	Jul 16, 2018 by bigcheese9
By putting events in order, scientists can use the order to determine how long ago certain geologic ... Started by saraeharris	1 Replies 82 Views	Jul 16, 2018 by ashely1112
What materials are best dated with carbon-14? A) Igneous rocks B) Volcanic rocks C) Organic ... Started by dmcintosh	1 Replies 124 Views	Jul 16, 2018 by patma1981
Which two conditions are the most important in order for an organism to become fossilized? A) ... Started by pragya sharda	1 Replies 34 Views	Jul 16, 2018 by fwbard
What does -zoic in the eras of the geologic time scale refer to? A) Life B) Water C) Rock D) ... Started by B	1 Replies 70 Views	Jul 16, 2018 by ebenov
The ________ period on the geologic time scale is a historic name that has now largely been replaced ... Started by TVarnum	1 Replies 82 Views	Jul 16, 2018 by LP
The white granite of the Idaho Batholith near Boise, Idaho, contains dark gray xenoliths of ... Started by tfester	3 Replies 167 Views	Jul 16, 2018 by parker125
Assume that a modern rabbit dies and becomes fossilized. Which of the following groups of animals ... Started by mia	1 Replies 93 Views	Jul 16, 2018 by meganlapinski
What is the ultimate source for naturally occurring carbon-14? A) Cosmic ray collisions and ... Started by evelyn o bentley	1 Replies 81 Views	Jul 16, 2018 by Leostella20
Numerical dating is putting events in order from first to last. Indicate whether this statement ... Started by brutforce	1 Replies 62 Views	Jul 16, 2018 by jordangronback
A detrital sedimentary rock can be radiometrically dated because the clasts formed at the same time ... Started by james	1 Replies 84 Views	Jul 16, 2018 by scrocafella
Match the type of fossilization with the correct definition. A) Indirect evidence of fossil life ... Started by cabate	1 Replies 85 Views	Jul 16, 2018 by ttt030911
Which rock layer is the oldest in this image? What will be an ideal ... Started by Shelles	1 Replies 83 Views	Jul 16, 2018 by anyusername12131
What kind of radioactive decay is present in this image? A) Alpha decay B) Beta decay C) ... Started by james9437	1 Replies 465 Views	Jul 16, 2018 by zogaridan
What is the ratio of parent atoms to daughter atoms after three half-lives? What will be an ideal ... Started by Jipu 123	3 Replies 192 Views	Jul 16, 2018 by adf223
Name the periods of the Paleozoic era in order from oldest to youngest. What will be an ideal ... Started by nmorano1	1 Replies 93 Views	Jul 16, 2018 by javimendoza7
Compare and contrast the three common types of radioactive decay: alpha particle decay, beta ... Started by burton19126	1 Replies 239 Views	Jul 16, 2018 by abro1885
You are studying an outcrop where the base layer is limestone and the layer directly on top of that ... Started by BRWH	1 Replies 144 Views	Jul 16, 2018 by aburgess