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Geologic History
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Question 1 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER] |
Scientists chose where units of geologic time began and ended based on major changes in life forms at certain times. 
true | |
false |
Question 2 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER] |
The ..... era covers almost 90% of earth's history.
Paleozoic | |
Mesozoic | |
Cenozoic | |
Precambrian |
Question 3 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER] |
Rock layers tell a story about their past. What is the basic assumption that is made when reading this story?
The composition of the Earth's atmosphere has been constant. | |
The Earth's crust cooled and then remelted before rock layers began to form. | |
The processes in the rock cycle were the same in the past as they are today. | |
Chemical reactions in the past were slower than they are today. |
Question 4 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER] |
Which of the following conditions help preserve organisms as fossils
quick burial by sediments | |
correctchoice hard parts | |
correctchoice protection from scavengers | |
activities of microorganisms |
Question 5 [CLICK ON ANY CHOICE TO KNOW MCQ multiple objective type questions RIGHT ANSWER] |
What can we learn from fossils? 
How earthquakes formed. | |
How erosion changed mountains | |
How Earth's magnetic field was formed | |
How Earth's environment has changed |
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