6.11.2010

evolution..in the ittiest bit of a nutshell

i went to this museum last summer and it was all about evolution...

here was the sequence of what i saw!

the sun + oxygen = earth!

--this was the start--

in the creation of earth and all living there were five major extinctions…then a sixth.

round one: this is where water came into play and was found.

round two:

Continents drifted together, forests and desserts were formed

the egg!

reptiles

during this extinction plant fossils have been determined to help know which season it is.

round three:

Mmesozoic era—183 million year span

periods--triassic, jurassic, cretaceous

coming alive: mammels, flowers, dinosaurs (started as tetrapods)

one out of five dinosaurs survived

round four:

continents shifted again!

50% of marine animals were extinct

95% of land plants were extinct…mainly in the northern regions

round five:

there is now over 50% of life on earth…humans!

no more dinosaurs

period: cenozoic

now!!!

three ways to be born:

plantals

marsupials

monotrenes

mammels:

rodents, hoofed mammels, carnivorans, primates

tropical plants/life:

birds

fish

Sea and water life

lucy:

3.2 million years ago

from eastern africa

one of the first hominids

-they had larger brains, flatter faces, smaller teeth, bigger trunk and smaller limbs

homosapians

-evolved around 195,000 million years ago

--according to the field museum of chicago dna supports evolution--

ice age:

1.8 million years ago today

life looked like it does today

this is when the land between north america and south america merged

types of animals: horses, dogs, bears, elephants, panthers, deer, mice, bison, gofers, beavers, etc.

tar traps began—oil was starting to kill animals.

round six:

today

began around 10,000 years ago

humans are the cause of this mass extinction—not climate change, and no, not merging continents…but, human activity

within the past year 30,000 species have gone extinct

in about one day on average 85 species go extinct

--i think this exhibit was telling us that we all fail.--

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