Because technically there is no such thing as cold
all that exists is heat
this is because heat is the rapid movement of particles, made by friction (to understand why you must delve into physics and some chemistry)
so, when you feel cold, it's really the absence of heat
so instead of "keeping the cold out", which makes no sense at all scientifically, insulation keeps the heat in.
as a side note
the feeling of cold is produced when you come in contact with an object (yes, air counts) that has less heat, or energy, than you do, You feel cold because heat (energy) from your body is being transferred to the environment. This ABSENCE OF HEAT in your body is why you feel cold
Answer:
too fast give you freedom you know as an adult so they they can test your sensitivity as an adult then they really see if you really need your field
C. The nuclear envelope contains the nucleus and forms a barrier between it and the cytoplasm
Cell membrane separates cell from external environment whereas nuclear membrane separates nuclear environment form cell itself.
There is Nucleoplasm as a fluid under the nuclear envelope whereas cytoplasm under the cell membrane
