probably the latitude and the longitude
The most important component of cork is suberin.
Silica is the most important component.
Ozone is an important component of ozone layer. It protects us from UV rays of the sun.
Contrast would be the most important visual variable for a map that will be viewed in black and white. Using different shades of gray to differentiate between features will ensure clarity and legibility when color is not available to convey information.
The metal that is most important for blood is iron. Iron is a crucial component of hemoglobin, the protein in red blood cells that carries oxygen from the lungs to the rest of the body.
Yes the CPU (aka microprocessor or Central Processing Unit) is the most important, but it is not necessarily the most expensive.
correctness
coordination is the most important component
Placing the most important information in the center of the map.
Collagen fibres.
Leads
bones
placing the most important information in the center of the map
The most important component is piperine.
The processor; otherwise it couldn't do any work.
The most important component of cork is suberin.
The most important component of turmeric is curcumin - C21H20O6.