___ is a term used to defined 88% of Earth\'s history prior to start of the Pale

Question

___ is a term used to defined 88% of Earth's history prior to start of the Paleozoic era. A) Quaternary B) Precambrian C) Paleogene D) Jurassic The ___ period on the geologic time scale is a historic name that has now largely been replaced by the Paleogene and Neogene periods. A) Carboniferous B) Hadean C) Quaternary D) Tertiary In what era is the Jurassic period? A) precambrian B) Paleozoic C) Mesozoic D) Cenozoic Which two conditions are the most important in order for an organism to become fossilized? A) Rapid death and oxygen-free environment B) Rapid burial and prossession of hard parts C) Rapid mineralization and rapid desiccation D) Rapid decay and possession of soft tissues

Explanation / Answer

36. B. Precambarian . All geologic time before the beginning of the Paleozoic era. This includes about 90% of all geologic time and spans the time from the beginning of the earth, about 4.5 billion years ago, to 544 million years ago.

37.D. Tertiary

38. c. Mesozoic . An era of geologic time between the Paleozoic and the Cenozoic.

39. B. body must be protected from decomposition so it must not be in contact with oxygen thus rapid burial is required for fossilization.

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