Deposits of coal are called coal seams, which can be anywhere from 20 to 300 feet thick, and stretch ...

Author Question: Deposits of coal are called coal seams, which can be anywhere from 20 to 300 feet thick, and stretch ... (Read 89 times)

michelleunicorn

Hero Member
Posts: 565

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

Sr. Member
Posts: 325

Reply #1 on: Jul 21, 2018

Answer to Question 1

T

Answer to Question 2

Nikolas Otto

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