"is" and " are" can be deleted?

The site is divided into three sections ,each featuring the role of derivatives as told through stories ,interactiv infographics ,vedios and quizzes. this is passive expression. "each featuring the role of derivatives as is told through stories" "each featuring the role of derivatives as are told... show more The site is divided into three sections ,each featuring the role of derivatives as told through stories ,interactiv infographics ,vedios and quizzes.

this is passive expression.

"each featuring the role of derivatives as is told through stories"

"each featuring the role of derivatives as are told through stories"

if there is "is" or "are" in sentence, can it be deleted?
Update: "each featuring the role of derivatives as told through stories "

I think there is a "is" before "as", and is it correct to delete it?
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