Bio Lecture On The Earths Creation

6/28/2010 Lecture 2 magazine scales fourth dimension scales 1. The physical composition of the earth 2. What happens next: fundamental major term periods 3. unofficial points in the history of period (on Earth) An workmans characterisation of the protoplanetary disk Origin of vivification 1. 2. 3. 4. Extra-terrestrial origins? What is spiritedness? The Earth before life originated Four travel Perturbations in the outer rings of the disk become protoplanets age scales clock scales An artists gist of the birth of the cheer An artists impression of the formation of the earth drag within the telephone exchange mass of the protoplanetary disk triggers thermonuclear fusion Gravity outside the grant of the sun causes depend to condense around protoplanets 1 6/28/2010 term scales m scales There are four briny meter periods in the Earths history that I motive you to know: Precambrian supereon: 4.

6 BYA 543 genus genus Mya Paleozoic era: 543 genus Mya 250 genus Mya Mesozoic era: 250 genus Mya 65 genus Mya Cenozoic era: 65 MYA - now How we depart time: Holocene epoch (now) Too small to fit on scale Time scales Time scales An artists impression of the Hadean eon An artists impression of the late(a) Hadean eon Its get a * turn* better 2 6/28/2010 Time scales Time scales The Hadean eon ends with the first life: amongst 4.2 and 3.8 BYA Modern stromatolites in Australia Precambrian stromatolites (mats of cyanobacteria): Glacier National Park Time scales Time scales cellular life arises late in the Precambrian (1 BYA) ! The Paleozoic while: 543 MYA 250 MYA Rare trilobite fossil with intact eyestalks Trace fossil indicates multitude campaign! Lateral and dorsal trilobite fossils Fossils of Precambrian multicellular life 3 6/28/2010 Time scales Time scales The Paleozoic Era: 543 MYA 250 MYA The Welsh detonation: Probably non such a big bang Archaeocyatha: heterogeneous Cambrian sponge-like animals Reconstruction of the Burgess Shale: Animals from the...If you want to get a integral essay, order it on our website: BestEssayCheap.com

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