Evolution
Evolution
Chnage in heritable traits in a population acrosd geberations based on their relation ships between speicies and their enviroment
Therory of evolution
scientifict explination of biological chage over time based on a large accumilation of evidance
how okd is the universe
13.8 billion yrs old
How old is rhe eart
4.54 bullion yrs old
how old is life on earth
3.7 billoin years ago
charcteristics if life
cellular organization, ability to reproduce, growth and development, energy use, homeostasis, response to enviroment, ability to adapt
4 main dangers to survival
Desiccation, predation, starvation, disease
eon
largets unit of time
era
unit of time shorter than an eon but lager than a period
phanerozoic era
wxtraordinary evolutionary innorvation, mass extinction events, profound influences of the speices of humans (conplex life)
abiogenesis
orgine of life from abiotic factros
stomatolites
layers rocks
speciation events
characteristic chaged so much from an ansestor that a new speicies is created
carrying capacity
the population size sustanaiblity supported bu the resorces un an area
naturalist
person studing plants and animals and how they live un nature(relationship between orgnanisb and their enviroment/change over time)
buffon(1707-1788)
stufyed anatomy, theroy of chage(orgnagnisms must chnage over time as a resyly of their enviromant)
Vestigial structures
non-functional but is homologous to a functional structure un a closely related species
carl linnaeus(1707-1802)
life changed iver time
eramus Darwin. (1731-1802)
common ansestor
lamarck(1744-1829)
theroy of acquired traits
curvier
founding father of paleontology
tgerory of catrophisim
Palenotoligy
scientific ebvestigation if prehistoruc life throgh the stufy of fossils
fossils
ancient remains, impressions or traces of an orgnanism or traces if it actuvity that have been presreved in rock or other minarel deposits in earths cryst
Theroy of Catastrophism
spiecis did not chabge but went extinct due to catastropic evebts and were replaced by new species
lyell(1797-1875)
fatger of geology, hypothesised the opposite of catatrophism- uniformitarianism
uniformitarianism
geological changes are slow and gradual, natural laws and procceses have not cnhaged over time
wallance(1854)
theory of evolution by natural selection, wrote darwin for advice, biogeographer
biogeographer
branch in biology that deals with geographical distributions of plants and animals