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| large core areas of Precambrian rocks that make up the surface of some continents |
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| the process plants use to turn carbon dioxide and sunlight into food |
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| types of ENVIRONMENTAL CHANGES that have affected the evolution of life |
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Definition
1. the formation & breakup of continents
2. mountain building
3. volcanic activity
4. climate changes
5. changes in sea level |
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Definition
| layered mounds if calcium carbonate deposited by cyanobacteria |
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| a cell that lacks a nucleus |
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Definition
| a cell that has a nucleus |
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| rapid change that could lead to the extinction of many types of organisms in a relatively short time |
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| a four-legged organism with lungs to breath, lives on land, and lays its eggs in water |
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Definition
late Paleozoic continent that formed the southern portion of Pangaea, consisting of all or parts of present-day:
1. South America
2. Africa
3. Australia
4. India
5. Antarctica |
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Definition
| a vertebrate with scaly skin that lays tough, leather shelled eggs |
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| (meaning "all sea") a huge ocean covering the rest of Earth's surface |
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| Period of the first mammal-like reptiles and gymnosperms. |
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| warm-blooded animals that feed their babies with milk |
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Definition
| small, rodent-like animals |
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Definition
| seed-bearing plant that bears its seeds on the surfaces of cones. |
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Definition
| Period of the spread of dinosaurs |
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Definition
| Fishes evolved into fishes like today and reptiles started living in the oceans in this period |
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| Scientists think birds evolved from dinosaurs and early ancestors of birds were probably small, feathered dinosaurs that could glide. |
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Definition
| A greater diversity of life forms evolved during this period |
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