evolution Flashcards
test
the process by which modern organisms have descended from ancient organisms
evolution, or change over time
who was charles darwin
a naturalist, and founder of evolutionary theory
During his travels he made numerous ___________________ and collected _______________
observations; evidence
his most important observations were found in the…
galapagos islands
He returned to England in _____ and spent ________ years studying his collections.
1836; 22
he found ______________________________________ in a Brazilian forest.
68 different species of beetles
He was puzzled by why a grassland in _________ and a grassland in __________ would have very different animals living in them.
Australia, Argentina
No rabbits in _____________________ and no Kangaroos in ______________________.
Australia; Argentina
He collected _______________ some of which resembled living organisms
fossils
some that looked like organisms __________________________________________________________________.
he had never seen
he envisioned
struggles for food and space, escape from predators, need for shelter among species of the world
Darwin noticed the _______________ islands were close together but had very different ____________
Galapagos; plants and animals
He wondered if animals living on different islands had all come from a ___________ ______________
common ancestor
He was very fascinated by the land _______________ and marine _____________.
tortoises; iguanas
He also collected many ground ______________ and noticed they all had different ________________.
finches; beaks
He wondered if animals living on different islands had once been members of the same _____________________.
species
Darwin was influenced by great _________ of the time that were challenging views about the ____________ world.
thinking; natural
1785
hutton
1798
malthus
1809
lamarck
1831
darwins voyage
1833
lyell
1858
wallace
1859
origin of species published
Earth is shaped by __________ ___________ that took place over long periods of time.
geological forces
Who estimated Earth to be _____________________ of years old, not thousands of years old.
Hutton 1785; millions
The human population is growing faster than the space and food needed to sustain it. The only thing preventing growth was __________, ___________, and _________________. Who created this?
war, famine, disease
Malthus 1798
Organisms could acquire traits as a result of experience or behavior. What theory is this by who?
the theory of use and disuse.
Lamarck 1809
The crab uses the claw as defense. What would happen after use?
Eventually the claw would grow from use and be passed to the offspring.
Geological _______________ occurring now have shaped Earth’s geological __________ over long periods of time. Who thought of this?
processes; features. Lyell1833
whats an example of Geological processes occurring now have shaped Earth’s geological features over long periods of time.
volcanoes and earthquakes