When warm air is trapped between two cold air masses. 1) warm front
2) cold front
3) occluded front
4) stationary front

zfoods? ok, pressure is used to keep the heat inside and to keep the food perfect.

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explanation:

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation:

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.