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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.
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Biology, 22.06.2019 08:00
What advantages does a pedigree have over a written passage?
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Biology, 22.06.2019 21:40
Which of the following statements accurately defines epidermis? a. a thick protein fiber composed of the protein collagen b. hard, dense bone tissue found on the outer surface of a bone c. single layer of epithelial cells and the underlying basal lamina d. outer, protective layer of the skin composed of stratified squamous keratinized epithelial tissue
Answers: 1
Biology, 23.06.2019 04:00
After agricultural soils are picked up and carried by a river, how are they deposited in the river’s del which is not a cause of desertification? a) light grazing b) contour plowing c) conversion of rangelands to crop lands d) high population density
Answers: 1
Speciation is found on the principle of genetic mutations and...
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