Parts of a vacuum flask and their functions

  Inside a vacuum flask :

Screw-on stopper. Outer plastic or stainless steel case. Outer layer of glass coated with reflective material (or stainless steel in unbreakable flasks). .Inner layer of glass (or stainless steel in unbreakable flasks). One or more supports keep inner vacuum container in place.

The vacuum flask was devised to preserve liquefied gases by preventing the transfer of heat from the surroundings to the liquid. The evacuated space between the walls (which are ordinarily glass or steel) is practically a nonconductor of heat; radiation is reduced to a minimum by silvering the glass or steel.

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Explanation:

Explanation:

in day time photo in photosynthesis make Oxygen and that oxygen is used by cellular respiration which produces which releases carbon dioxide in written in return so it is Photosynthesis uses energy from light to convert water and carbon dioxide molecules into glucose (sugar molecule) and oxygen (. The oxygen is released, or “exhaled”, from leaves while the energy contained within glucose molecules is used throughout the plant for growth, flower formation, and fruit development.