The principle of crosscutting relationships, the law of superposition, the principle of original horizontality, inclusions, and unconformities help earth scientists date rocks and are examples of

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.

Approximately what portion of the foods that we eat have been genetically modified in some way? a.fewer than 10% b.about 50% c.nearly 100%

Iwanna go do something with my ideas? ?