Help pls so i don’t know this
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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 02:30
How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?
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Biology, 22.06.2019 05:40
Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.
Answers: 1
Mathematics, 26.11.2019 14:31
Mathematics, 26.11.2019 14:31
Mathematics, 26.11.2019 14:31
History, 26.11.2019 14:31
English, 26.11.2019 14:31
History, 26.11.2019 14:31
English, 26.11.2019 14:31
Mathematics, 26.11.2019 14:31
Chemistry, 26.11.2019 14:31
History, 26.11.2019 14:31
Geography, 26.11.2019 14:31
English, 26.11.2019 14:31