The document discusses adjusting entries in accounting. It explains that adjusting entries are necessary under the accrual basis of accounting to properly recognize revenues and expenses in the correct periods, as revenues should be recorded when earned and expenses recorded when incurred rather than when cash is paid or received. The major types of adjusting entries are for deferrals, such as prepaid expenses and unearned revenues, and for accruals. The document provides examples of adjusting entry journal entries for prepaid expenses and unearned revenues.