Explain the conditions for cloud formation

Clouds form in regions of low pressure. Moist, warm air may flow over a cooler area and the water vapor in that air may condense, forming clouds. There are many possible situations in which water vapor in the air may condense and form clouds. 
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Are formed from small drops of water or ice in its liquid state. Can have different shapes and sizes. Are also formed from water vapour, i.e. particles are formed from the cooling of the air, it consumes all the energy and dust from the air, causing the temperature decrease and the so called adiabatic cooling occurs.

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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.