This is the 3683rd most frequent Russian word.
требующие
"Requiring" or "demanding."
Требующие is an active participle derived from the verb "требовать" (to demand/require), used here to describe the tasks as requiring effort.
Его задачи требуютишие значительных усилий, требуют тщательной подготовки.
His tasks, requiring significant effort, demand careful preparation.
Требующие describes projects and is associated with the need for a specific approach.
Она увлекается проектами, требующими нестандартного подхода.
She is fond of projects requiring a non-standard approach.
Требующие specifies issues that need immediate action, emphasizing urgency.