The removal of salts and minerals from a target substance
Growing willow for biofuel is sustainable development because it is a source of fuel which potentially will never run out. For every willow tree that is cut down, another can be planted in its place. This means that the source of fuel is potentially limitless and subsequently sustainable.
A seems most likely, check with others if u have the time
Formula. The chemical formula that represents all of these stages throughout the cellular respiration process is: Spelled out, it states that glucose and oxygen yield carbon dioxide and water and a maximum<span> of 38 molecules of ATP. The ATP molecules are now used as the energy currency of the cell.</span>
It provides the reader with your topic and give them a central idea of your writing.