Physics
In heating frozen foods in sealed pouches in a microwaves, why do you first poke holes in the pouch?

To allow the microwaves to get into the food through the holes
To allow the heat to get into the food through the hole
To allow the aroma of the food to come out through the holes
To prevent the steam pressure from bursting open the pouch

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Physics
Plants are dried up in winter due to frost because

There is mechanical loss of tissues and drought condition prevails
Photosynthesis does not take place at such low temperature
Respiration does not take place at low temperature
Evaporation does not take place

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