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Science Geology test

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Pangaea split into a northern continent called Laurasia and a southern continent called ?   Gandwanaland  
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Flowering plants called____?_____ evolved during the mesozoic era   Angiosperms  
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Which period was dominated by fish?   Devonian period  
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In what time period did great coal forming swamps exist in?   Pennsylvanian period  
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We live in and mamals dominate the________ era   Cenozoic era  
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Plants having seeds without fruit covering such as athe pine appeared in the Permian period and are called__________.   Gymnosperms  
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What era was dominated by invertebrates, fish, and early amphibians and reptiles?   Paleozoic era  
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What formed when volcanoes erupted gases?   Earths early atmosphere  
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What super continent was in the late paleozoic and early Mesozoic era?   Pangaea  
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What was the supercontinent that existed 750 million years ago?   Rondinia  
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The oxygen in our atmosphere is __________ that was created 3 billion years ago   cyanobacteria  
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Based on the fossil evidence of___________,scientist think some dino's cared for their young.   Maiasaura  
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The earth is believed to be ________ years old.   4.5 billion  
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Which period is known for trilobites?   Cambrian  
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Dino's lived in the ________ era   Mesozoic Era  
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The first bird was the ________ which had feathers and claws.   Archaeopterys  
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What is the process by which a particular organism survives b/c of a trait that makes it suited to the enviorment?   Natural Selection  
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What animal evolved that did not need to return to the water?   Reptiles  
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What animal with a backbone developed during the ordovicion period?   Vertebrates  
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Early Cyanobacteria formed _________ or limestone reef line structures   stromatolites  
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Life began when air molecules were struck by ________?   Lightning  
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_________ live on land but must return to water?   Amphibians  
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A Bird believed to have evolved from the dino ______?   Troodon  
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What formed 3.8 billion years ago?   Oceans  
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what was the longest era?   Pre-cambrian era  
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When did amber form?   30-90 million years ago  
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Amber is also known as_______?   Succinite  
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What does the modern word amber come from?   the Arabic word ambergris which is a waxy substance in the intestines of whales  
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Is DR Amber too old or too young?   Too Young  
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What breakes down over time?   DNA  
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Is it impossible to get complete strains of Dino DNA?   YES  
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What is the hypothesis of how dino's became extinct?   Extinction was caused by a huge impact that left a cloud around the earthblocking the sunlight killing cold blooded dino's.  
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How long was the earth completely dark?   1-3 months  
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who were the most affected organisms?   cold blooded dino's  
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