Which description shows competition in an environment?
Ob
three organisms of the same species living in an area
an organism that feeds on some food
three organisms battling over limited resources
an organism that finds a place to sleep

What are the choices?

Closing a ring restricts the rotation around individual car bon carbon bonds hope it will you !

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.