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Portland, Oregon, has an average of 240 cloudy days per year. Which heating system would be the least likely choice for this environment? masonry fireplace forced-air furnace active solar heat radiant
answered
May 19, 2019
Physics
high-school
6
votes
54.7k
views
Help me someone please
answered
Dec 12, 2018
Mathematics
high-school
2
votes
116k
views
How many electrons are in an atom of elemental sodium?
answered
Nov 26, 2018
Chemistry
high-school
4
votes
108k
views
Match the philosopher with his ideas, achievement, or events in his life. Aristotle
answered
Oct 26, 2018
History
college
3
votes
37.6k
views
What is the degree of 12x^4-8x+4x^2-3
answered
Jul 15, 2018
Mathematics
high-school
3
votes
186k
views
What was the first act that the Parliament passed in an attempt to raise revenue by taxing the American colonists?
answered
Jun 8, 2018
History
high-school
2
votes
130k
views
Which of the following would be the easiest way to diagram predatory and parasitic relationships between several species?
answered
Feb 12, 2018
Biology
high-school
6
votes
172k
views
What a impor fraction
answered
Jan 25, 2018
Mathematics
middle-school
6
votes
70.2k
views
The effects of sunlight on the aquatic life inhabiting lake okeechobee
answered
Dec 28, 2017
Biology
high-school
4
votes
122k
views
Stems _____. A.can be used for asexual reproduction B.absorb water and minerals from soil C.are the main area for photosynthesis D.contain the reproductive organs of flowers
answered
Nov 7, 2017
Biology
high-school
1
vote
185k
views
Define "animal cell" in about 1 sentence.
answered
Oct 8, 2017
Biology
middle-school
1
vote
91.3k
views
Name at least three other quantities that could be used to make isoline maps
answered
Sep 22, 2017
Advanced Placement (AP)
high-school
5
votes
95.7k
views
16x²-81=0 solve the following quadratic equation
answered
Jun 9, 2015
Mathematics
middle-school
3
votes
189k
views
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