Evolution Flashcards
It refers to a change in characteristics of population of organisms over time
Evolution
It will continue as long as organisms are born, die, and compete for resources they need to survive
Evolution
Evidences of Evolution
- Fossil Records
- Comparative Anatomy
- Embryonic Development
- Genetic Information
These are preserved remains of an organism. The most common are bones, seeds, shells, and pollen grains.
Fossil
This is the process wherein scientists use fossils to reconstruct the complete structure of the organisms.
Fossil Reconstruction
This is a type of fossil wherein minerals in mud and sand replace the hard parts of an organism
Petrified Fossil
This type of fossil is formed when soft, thin body structures leave impressions on soft sediment such as mud
Imprints
This type of fossil is formed when an organism is buried by sediments then later harden into rock
Molds and Casts
This type of fossil is considered as marks or evidence of animal activities
Trace Fossils
This type of fossil is formed when it is
preserved in sedimentary rock and is formed with more organic material most commonly in environments where fine sediment is deposited
Compression
It states that in a series of sedimentary rock layers, the younger rocks normally lie on top of older rocks
Law of Superposition
According to law of superposition, life moved from one environment to another. What are the environment involved?
Life moved from an aquatic environment to terrestrial one
This is used to determine the absolute age of rocks and fossils by examining the elements they contain
Radioactive Dating
This is the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay
Half-life
It is a radioactive isotope that is commonly used to date the remains of living things
Carbon-14