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Apologia module 7

Apologia science module 7 terms and questions

Petrifaction The conversion of organic material into stone
Resin A sticky, liquid substance that usually hardens when exposed to air
Extinct A term applied to a species of plant or animal that was once living but now is not
What is a trilobite? It is a creature who lived in the ocean bottom where they plowed through the mud looking for food. Like a lobster, they had an exoskeleton. They are assumed to be extinct.
What is a placoderm? It is a kind of fish that had a bony plate covering its head instead of scales. They are assumed to be extinct.
Created by: JRae