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Biology, 22.06.2019 01:30
Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.
Answers: 1
Biology, 22.06.2019 07:30
Which greenhouse gas is emitted when burn fossil fuels for energy? a.nitrogen b.oxygen c.carbon dioxide d.helium
Answers: 2
Biology, 23.06.2019 00:00
Darwin’s studies of finches on the galápagos islands suggest that the finches’ differences in beak structure were most likely directly due to:
Answers: 1
Biology, 23.06.2019 02:00
What is a quantitative observation? a. an observation that proves the hypothesis is wrong. b. an observation about the number or amount of something. c. an observation about the color, shape, size, or condition of something. d. an observation in which the appearance of something is described using descriptive language.
Answers: 1
1. The of the affects the by dragging all the water in the oceans towards it, causing a bulge on...
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