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

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


Play button


Play button




Click to flip

8 Cards in this Set

  • Front
  • Back
Charles Bonnet
Observed fossils and realized that they do not resemble modern organisms. He theorized that theyare from a previous era.
Charles Darwin
Theory of evolution. He traveled to the Galapagos Islands and realized that they did not look like the current organisms.
Jean-Baptiste Lamarck
Attempts to explain how organisms change over time. Though, he is wrong. But he is the first and gets later scientists trying to figure it out.
Thomas Malthus
Theory that humans will eventually need more than the Earth can provide.
Alfred Wallace
Discovered Natural Selection; the ability to survive, then pass on its traits that helped it survived.
Example: Fat beaks on a bird can not suck honey from a tree. A skinny long beak is needed. The fat beaked birds do not survive, therefore do not reproduce.
Created the principle that allele frequencies will remain constant unless a factor changes it.
James Hutton
Earth developed over millions of years ago. Rain, Heat, Cold, Wind, etc. shaped it to look as it currently does. (Surface)
Charles Lyell
Idea that humans impact the geological features on the Earth.