Colorado has a vast population of lodgepole pines. A population of lodgepole pines has been killed in a section of the forest. What is a possible limiting factor of that population? devastation by the pine bark beetle
Colorado’s long history of acidic soils
genetic variability
shallow root system

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.

Achair would be nonliving, also a toy, clothesand living things would be humans, animals, bugs