Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Life Over Time


What is Evolution? The process in which a species changes over time.
What is Natural Selection? Occurs when members of a species that are better suited to their environment, survive and reproduce at a higher rate than other members of the species.
Who came up with the idea of natural selection? Charles Darwin
What are Adaptations? An inherited trait in a species that gives them an advantage in their environment.
What is Overproduction? When an organism produces more offspring than the environment can support.
What is Variation? Differences in traits. Each offspring causes a slight change in the species it belongs to.
What is Selection? Organisms with a particular adaptation are most likely to reproduce.
What is Speciation? And when does it occur? A change of a new species from an existing species. When the environment changes.
What is Isolation? Separation of species they are not able to breed with similar species.
Why are organisms classified? It allows scientists to keep track of 3 to 10 million different species on planet earth.
What is classification? Grouping organisms based on similarities and differences in physical traits, genetic material, and types of cells.
What are the 8 levels of classification? Most General: 1. Domain 2. Kingdom 3. Phylum 4. Class 5. Order 6. Family 7. Genus 8. Species: Most Specific
What are the 6 Kingdoms? 1. Bacteria 2. Archaea 3. Animalia 4. Plantae 5. Fungi 6. Protista
How are Adaptations different from Variations? Adaptations= Advantage Variations= Change
What are 3 examples of Fungi? Mushrooms, molds, and yeasts
What is unique about the kingdom Archaea? They can live in extreme environments.
Created by: a_graham