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Author Question: Thomas Edison's contribution to the search for cheap and efficient indoor lighting was the a. ... (Read 21 times)

ARLKQ

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on: Sep 12, 2019

Question 1

The mound builder societies were characterized by
 
  a. hunting and gathering.
  b. power struggles among rival groups.
  c. small settlements.
  d. large-scale trade and commerce.

Question 2

Thomas Edison's contribution to the search for cheap and efficient indoor lighting was the
 
  a. fluorescent lamp.
  b. arc light.
  c. incandescent bulb.
  d. gaseous-discharge bulb.


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triiciiaa

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Reply #1 on: Sep 12, 2019

Answer 1

ANSWER: d

Answer 2

c


ARLKQ

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Reply 2 on: Sep 12, 2019
Gracias!

duy1981999

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Reply 3 on: Yesterday
:D TYSM

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