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Author Question: Deposits of coal are called coal seams, which can be anywhere from 20 to 300 feet thick, and stretch ... (Read 83 times)

michelleunicorn

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on: Jul 21, 2018
Deposits of coal are called coal seams, which can be anywhere from 20 to 300 feet thick, and stretch over hundreds of square miles.
 
  Indicate whether the statement is true or false.

Question 2

__________ invented the first four stroke internal combustion engine.
 
  Fill in the blank(s) with the appropriate word(s).


smrerig

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Reply #1 on: Jul 21, 2018
Answer to Question 1

T

Answer to Question 2

Nikolas Otto


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