Which are precautions to take when working with heat and fire? check all that apply. do not touch. keep flammables away. avoid touching face and eyes. keep clothing away from flame. do not mix chemicals unless told to do so. tie back hair.

All the given precaution are important to take care when working with heat and fire.

Explanation:

Double check on these precaution should kept be while working or experimenting with fire and heat:

Hair should be tied back : bun or pony will be fine. if hair are untied then chances of catching fire by hair will be high.Do not touch hot equipment ,if required use gloves or tongs. Touching hot equipment with bare hands may lead to burns or minor (or major) accidentKeep your face and eyes away from the flame while experimenting.Cover your face with mask and goggles.Do not mix chemical until or unless told to do so. This is because some times mixing of chemicals leads to evolution of large amount of heat which can difficult to handle.Be careful regarding cloths while working with heat and fire.Flammables must be kept away and should be used with caution. Safer distance must be maintained

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.

Because some people pollute water ans waste it