Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/44

Click to flip

44 Cards in this Set

  • Front
  • Back
evolution
change over tiem
the process by which modern organisms have descended from ancient organisms
charles darwin
born in england on 1809
HMS BEAGLE
set sail in 1831 from england for a voyage around the world
darwin made numberous observations and collected evidence that led him to propose a evolutionary hypothesis about the way LIFE CAHNGES OVER TIME
waht was darwin looking for?
a scientific explanation for the diversity of life on this planet
what did be begin to realize during his travels
that where is an enormous number of species inhabit the Earth
what else did he become intruiged by
that so many plants and animals seemed remarkably well suited to wahtever environment they inhabited. he was wonderin if there was some process that led to such a variety of ways of reproducing
fossils
darwin found that some fossils resembled organisms that were still alive but some looked completely differnt from any creature he had ever seene
waht group of islands influenced darwin the most
the galapagos
small low islands
hot dry and barren
higher islands
greater rainfall and differnt plants and animals
tortoises on the island
that shape of the tortoises shell could be used to indentify which island a particular tortoise inhabited
birds
different shaped beaks
he observed that the characteristics of many animals and plants varied noticeably among the different islands of the galapagos
he hypothesized that the aniamls came from a common ancestor but live on differnt islands
two scientists who formed important theories based on this evidence were:
James HUTTON and Charles LYELL
waht did they help scientists do?
relalize that the earth is millions of years old and the processes that changed Earth in the past are the same proceses that operate in the present
james hutton published
layers of rock form slowly
pushed up from the beneath Earths surface
evolution
change over tiem
the process by which modern organisms have descended from ancient organisms
charles darwin
born in england on 1809
HMS BEAGLE
set sail in 1831 from england for a voyage around the world
darwin made numberous observations and collected evidence that led him to propose a evolutionary hypothesis about the way LIFE CAHNGES OVER TIME
waht was darwin looking for?
a scientific explanation for the diversity of life on this planet
what did be begin to realize during his travels
that where is an enormous number of species inhabit the Earth
what else did he become intruiged by
that so many plants and animals seemed remarkably well suited to wahtever environment they inhabited. he was wonderin if there was some process that led to such a variety of ways of reproducing
fossils
darwin found that some fossils resembled organisms that were still alive but some looked completely differnt from any creature he had ever seene
waht group of islands influenced darwin the most
the galapagos
small low islands
hot dry and barren
higher islands
greater rainfall and differnt plants and animals
tortoises on the island
that shape of the tortoises shell could be used to indentify which island a particular tortoise inhabited
birds
different shaped beaks
he observed that the characteristics of many animals and plants varied noticeably among the different islands of the galapagos
he hypothesized that the aniamls came from a common ancestor but live on differnt islands
two scientists who formed important theories based on this evidence were:
James HUTTON and Charles LYELL
waht did they help scientists do?
relalize that the earth is millions of years old and the processes that changed Earth in the past are the same proceses that operate in the present
james hutton published
layers of rock form slowly
pushed up from the beneath Earths surface
natural selection
environment sets criteria
aritifical selection
humans select waht they want
-nature provided the variation among different organisms and humans selected those variations that they found useful
transmutation
aka evolution
-organisms change overtime
immutability
things dont change
fitness
you have what it takes to survive
-the ability of an individual to survive and reproduce in its specifc environment
evidence for evolution:
geographic distribution
embyronic structures
fossils
DNA
embryology
natural variation
differences among individuals of a species found in all types of organisms
struggle for existence
means that members of each species compete regularly to obtain food lving space and other necessties of life
adapation
any inherited characteristic that increases an organisms chance of survival
darwin concluded about adaptation
successful adaptations enable organisms to become more suited to their environment and thus have a better chance of surivival and to reproduce
-it cna physical or more complex such as behavior changes
survival of the fittest
aka natural selection
individuals that are better suited to their environment suvive and reproduce most successfully
natural selection
results in changes in the inhertied characteristics of a population
-these changes increas a species fitness in its environment
descent with modification
each living species has descended with changes from otehr species over time
common descent
all species-living and extinct-were dervied from common ancestors