What is the standard deviation of a portfolio which is comprised of $8,400 invested in stock S and $3,600 in stock T? 
Definitions:
Algal Contribution
The impact or role of algae in ecosystems, particularly regarding oxygen production through photosynthesis and as a foundational element of food chains.
Fungal Component
A part or element of a system that is derived from fungi or consists of fungal organisms.
Photosynthetically Derived Food
Nutrients produced by plants through the process of photosynthesis, which are a primary source of energy for herbivores and omnivores.
Dikaryotic
Having two genetically distinct nuclei (n+n).
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