Based on your knowledge of electrophilic aromatic substitution,predict the position of attack of an electrophile on pyridine,i.e.,does the electrophile E+ attack carbon 2,3,or 4? Explain your answer. 
Which substitution product(s)forms and why?
Definitions:
Apoptosis
A process of programmed cell death that occurs in multicellular organisms, crucial for development and maintaining health.
Outer Bark
The external layer of the tree's bark, composed of dead cells, that serves as a protective layer against physical damage and disease.
Woody Plants
Woody plants are types of vegetation that develop hard, fibrous structural tissue called wood, used for support and water transport.
Periderm
A protective tissue in plants that replaces the epidermis in parts that undergo secondary growth, such as in tree bark.
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