Answer this will mark brainliest and 3 more times on other questions if you get it right

A

Explanation:

The vaccum keeps the inside of the thermos from losing heat loss

C) It prevents particles from transferring thermal energy between the outer and inner bottles.

If the vacuum portion was filled with air, then the air would help transfer the energy from hot to cold, effectively cooling down the hot liquid inside the thermos. But the lack of air means that the particles can't make such a transfer of energy so the liquid stays hotter for a longer period of time.

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

the endomembrane system i think