The action of compressing or being compressed.
the reduction in volume (causing an increase in pressure) of the fuel mixture in an internal combustion engine before ignition.
I believe they form an endospore around themselves- it suspends metabolic activity (any chemical reaction in their cells) so they can retain more energy when there are droughts or the temperature is too low
Bread , steak , and chicken
The Cenozoic Era
I hope that helped :)