List 3 reasons an organism might need to change over time.
Climate change, lack of resources like food, water, mates, territory, a natural disaster, a new predator
Name a specific example of organisms changing over time.
Darwin's Finches, Galapagos Giant Tortoise and Peppered Moths
True or False. Once a certain trait becomes favored for survival, it is always beneficial in any environment?
False. An adaptation can be favorable in one type of environment and favored against in another. Ex: thick fur in cold climates would not be beneficial in heat
In relative dating...where would the youngest fossils possibly be found in sedimentary rock?
Top layers (oldest toward the bottom)
The most accurate form of fossil dating is when radioactive element decay is measured from inside the fossil to give an exact age. Name this form of fossil dating.
Absolute (radioactive)
Define a fossil.
the remains of a once living organism- it is no longer on Earth
What is the difference in a theory and a fact?
A fact is 100% truth and a theory can be disproven. It is widely accepted and has evidence to support it.
Over time, horses evolved to have longer legs. Why would this be needed?
run faster
List the 5 Mechanisms for Change (causes, 5 Fingers of Evolution).
mutation, migration (gene flow), natural selection, non random mating (sexual selection) and genetic drift
Darwin's Finches had noticeable differences. What were these differences in appearance and why did they evolve?
beak shape/size; food options available on that island
Darwin presented 5 Principles of Natural Selection...name them in order.