Question and answer
The end of which era is marked by the largest extinction event in Earth’s history? A. Cenozoic B. Mesozoic C. Paleozoic D. Precambrian
The Paleozoic Era is marked by the largest extinction event in Earth’s history.
Expert answered|Len24|Points 1069|
Question|Asked by Charitybarron
Asked 7/11/2019 1:59:55 AM
Updated 7/11/2019 6:06:55 AM
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Questions asked by Charitybarron
How old is a mammoth’s tusk if 25 percent of the original C-14 remains in the sample? The half-life of C-14 is 5730 years. A. 5730 years B. 11,460 years C. 17,190 years D. 22,920 years
Weegy: 11,460 years is a mammoth’s tusk if 25 percent of the original C-14 remains in the sample. The half-life of C-14 is 5730 years. Solution: Amount remaining= original amount/ 2^n 100/25 = 2^n 4=2^n n=2 t=nt 1/2 = 2 x 5730 yrs = 11,460 years (More)
Question|Asked by Charitybarron
Expert Answered
Asked 7/11/2019 2:02:56 AM
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the matching of outcrops or fossils among regions
Weegy: Correlation is the matching of unique rock outcrops or fossils exposed in one geographic region to similar outcrops exposed in other geographic regions. (More)
Question|Asked by Charitybarron
Expert Answered
Asked 7/11/2019 1:58:28 AM
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Which is not a typical characteristic of an index fossil? A. was commonplace while alive B. existed for a long period of time C. is geographically widespread D. is easily recognizable
Weegy: They existed for a long period of time -is not a typical characteristic of an index fossil. (More)
Question|Asked by Charitybarron
Expert Answered
Updated 12/5/2020 10:40:07 AM
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Which is not a typical characteristic of an index fossil? A. was commonplace while alive B. existed for a long period of time C. is geographically widespread D. is easily recognizable
Weegy: They existed for a long period of time -is not a typical characteristic of an index fossil. (More)
Question|Asked by Charitybarron
Expert Answered
Updated 232 days ago|8/30/2023 10:49:00 PM
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Which is the smallest division of geologic time? A. period B. eon C. era D. epoch
Weegy: The smallest unit of geologic time: EPOCH. (More)
Question|Asked by Charitybarron
Updated 7/11/2019 2:41:59 AM
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