$1.$ Use online sources to define the following items.

Words $-$

$71.$Materials Management

$72.$Purchasing Lead Time

$73.$Work in Progress WIP

$74.$Periodic Inventory

$75.$Obsolete Stock

$76.$Sequence Dependent Setup

$77.$Order Point Inventory System

$78.$ Revenue Management

$79.$ APICS

$80.$ Bullwip Effect

$81.$ Cost of Goods Sold

$82.$ Consignment Inventory

$83.$ Lot for Lot

$84.$ Scrap Rate

$85.$ Vendor Managed Inventory