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Heating systems transfer thermal energy to rooms by conduction and _______. Select one: a. combustion b. compression c. convection d. radiation
answered
Feb 28, 2018
Biology
high-school
5
votes
79.2k
views
Which system of equations has infinitely many solutions
answered
Feb 26, 2018
Mathematics
high-school
4
votes
218k
views
The hydra has an incomplete digestive system. How does the hydra remove undigested food? A. It pushes out food through an opening, which is also used to bring in food. B. It pulls food out with its tentacles.
answered
Sep 24, 2017
Biology
middle-school
3
votes
231k
views
The _____ requires employers provide equal pay for equal work.
answered
Apr 18, 2017
Social Studies
high-school
7
votes
13.3k
views
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