1. Sunlight: This is probably the most important need for all advertisers because it is the source of all energy. Advertising needs to be seen.
  2. Water: Water is the medium in which living cells and tissue work. Water is also a living environment for many plants and animals. Advertising needs the right environment.
  3. Air: Air is made up of several gases, but the two most important gases are Oxygen and Carbon dioxide. Without oxygen, animals will die, and without carbon dioxide, plants cannot survive. Advertising needs a consumer with demands.
  4. Food (nutrients): Living things need energy for function. Energy is needed to grow, reproduce, move, and to work. Think of what will happen if you stayed for three days without food… Advertising needs s good return on investment