Author Question: Thomas Edison's contribution to the search for cheap and efficient indoor lighting was the a. ... (Read 43 times)

ARLKQ · **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.