Life Has A History; Evolution
How many different species of living things exist today?
Which group of animals has the largest number of species?
How many mammal species exist today?
Most abundant organisms to least abundant
Anthropods, Molluscs, Roundworms, Flatworms, Mammals
What is biodiversity?
the many different types of organisms that exist
470 Million Years Ago: What was the name of the period?
What was the dominant predator?
What was the first anthropod?
160 Million Years Ago: What was the name of this period?
Middle Jurassic Period
What large marine reptile existed?
How old is the Earth?
over 4 billion years old
4.6 billion years ago
the Earth forms
3.9 billion years ago:
560 million years ago:
First multicellular life
500 million years ago:
420 million years ago:
First land plants
225 million years ago:
65 million years ago:
130 thousand years ago:
The best source of evidence for determining events in Earth’s History is…
What is a paleontologist?
a person who studies the fossils they find to learn more about the earth long ago
Three examples of fossils are
Forams, Brachiopods, and Fossil Metaseavoia leaves
What features are found in therapods?
carnivorous teeth, long tail, three toes, three fingers
What is a cladogram?
diagrams used to show evolutionary relationships
What is divergence?
the splitting of one species into two or more species
Two which animal are the crane and eagle most closely related?
What other date do scientist use to find if organisms are related?
Behavior, Embryology, and DNA
What birds on the Galapagos islands were adapted to different regions?
The beaks of the birds vary with what?
the food the finches eat
What would happen if the environment changed and only plants with larger, harder seeds survived?
finches with larger bills would be better adapted to eating the larger, harder seeds, better chance at survival
What is geographic isolation?
the separation between population caused by geographic distance or barriers
Identify the extinct creature?
Name two animals that have gone extinct since humans have been present..
The quagga which was a close relative of Zebras and the golden lion tamarin which is native to a small part of the Brazilian Rain Forest