Term
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Definition
all organisms within domains bacteria and archae
Single celled dont have nucleus for their DNA |
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Term
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Definition
All organisms within domain eucarya
have a nucleus for DNA
most are single celled some are multi celled
all multi celled organism sare in the domain eucarya and most need oxygen |
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Term
| When were the first Eucarya? |
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Definition
the first fossils are from about 2.1 billion years ago found in michigan
but cholestrol was found in rocks as old as 2.7 BYA and this is only produced by eukayotes
so by this time cyanobacteria and eucarya existed |
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Term
| Where were the first eucarya |
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Definition
| these were found under water because this is wher eoxygen was abundant and most eucarya need oxygen |
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Term
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Definition
major step in evolution of eucarya, 2.1 BY after eucarya evolved multicelled
long flat lots of surface are to absorbe oxygen neaar bacteria mats in deep ocean |
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Term
| DESCROBE THE CAMBRIAN EXPLOSION |
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Definition
540 MYA HUGE INCREASE IN NUMBER OF MULTI CELLULAR SPECIES
THEY HAD HARD CALCIUM CARBON SHELLS ALLOWED THEM TO DIG TO MORE NUITRIENTS AND RECYCLE THEM INCREASING BIOLOGICAL PRODUCTIVITY |
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Term
| HOW MANY MASS EXTINCTIONS |
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Definition
| THERE HAVE BEEN 5 IT IS DEFINED AS OVER 25% OF ALL BIOLOGICAL FAMILIES TO DIE |
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Term
| WHAT IS POSITIVLEY COUPLED WITH BIODIVERSITY? NEGATIVLY? |
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Definition
| EVOLUTION IS POSITIVE BECAUSE IT CREATES MORE AND EXTINCTION IS NEGATIVE... THIS MEANS IT IS UNSTABLE BECAUSE THERE IS NO NEGATIVE FEEDBACK SYSTEM TO CONSTRAIN IT |
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Term
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Definition
| THIS IS A VARIATION OF AN ATOM SO IF THERE ARE 6 PROTONS AND 6 NUETRONS LIKE CARBON IT IS c-12 WITH 6 AND 7 IT IS C 13 |
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Term
| LEVELS OF CARBON ISOTOPES |
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Definition
| WHEN THERE IS ALOT OF PHOTOSYNTHESIS WE FIND HIGHER LEVELS OF C-13 AND C-14 BECAUSE MORE C-12 IS BEING ABOSRBED |
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