14.1 WEBQUEST

1-Different species exist today:-over 30 million

2-Group w largest # species:-arthropods

3-# mammal species:-4,600

14.1 WEBQUEST

4-# from 1 (most abundant) to 8 (least abundant)-2-plants3-protists 8-mammals 5-mollusks4-fungi 6-roundworms 1-arthropods 7-flatworms

5-biodiversity-many different types of organisms that exist

14.1 WEBQUEST

6-470 million yrs ago:period-Ordovician perioddominant predator-cephalopods (tentacled creatures)1st arthropod-Trilobites

7-160 million yrs ago:period-Middle Jurasic periodmarine reptile-Ichthyosaur

14.1 WEBQUEST

8-how old is earth?-over 4 billion yrs

10-best evidence of events in earth’s history--fossils

14.1 WEBQUEST

9-COMPLETE:

1st multi-cell life

1st life

1st land plants

1st dinosaur

dinosaur extinct

modern humans

1st fish

14.1 WEBQUEST

11-paleontologist-person studies fossils to learn about past life

12-features found in therapods-carnivorous teeth-long tail-3 toes/3 fingers

14.1 WEBQUEST

13-cladogram-branching diagram – shows relationship between groups of animals

14-divergence-splitting of one species into two or more species

14.1 WEBQUEST

15-which animal are crane/eagle closest related-Archaeopteryx

16-other data to determine related organisms-behavior-embryology-DNA

14.1 WEBQUEST

17-birds on Galapagos Islands-finches

18-beaks vary-food source -region/lifestyle

19-environment changed – how affect pop of finches-finches with larger bills - Geospiza fortis - would thrive

14.1 WEBQUEST

20-geographic isolation-separation between populations due to geographic distance/barriors

21-creature-Trilobite

14.1 WEBQUEST

22-animals gone extinct since human time-quagga – relative of zebras-passenger pigeon-golden lion tamarin monkey