Answer
option (a).
Work Step by Step
Conduction and convection need a medium to travel, Radiation doesn't need a medium and travels through space. Thus, earth loses most of its heat through radiation.
College Physics (4th Edition)
by Giambattista, Alan; Richardson, Betty; Richardson, Robert
Published by
McGraw-Hill Education
ISBN 10:
0073512141
ISBN 13:
978-0-07351-214-3
Chapter 14 - Multiple-Choice Questions - Page 532: 1
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