In the 14th century, plague ravaged Europe and Asia and was called the Black Death. Plague does not respond to penicillin, but other antibiotics are effective. Sanitary measures against fleas and rodents, quarantine and extreme caution in handling infectious materials help to suppress epidemics.
1. Expense recognition. Expenses are decreases in assets (e.g., rent expenses) or increases in liabilities (e.g., accrued utility expenses) that result from operating activities undertaken to generate revenue. Expenses are recognized in accordance with the matching principle. This principle mandates that the expense or cost of doing business is recorded in the same period as the revenue that has been generated as the result of incurring that expense or cost.
Accounts Receivable is an asset account and is increased with a debit; Service Revenues is increased with a credit. Expenses and Losses are Usually Debited. Expenses normally have their account balances on the debit side (left side). A debit increases the balance in an expense account; a credit decreases the balance. Since expenses are usually increasing, think debit when expenses are incurred. (We credit expenses only to reduce them, adjust them, or to close the expense accounts.) Examples of expense accounts include Salaries Expense, Wages Expense, Rent Expense, Supplies Expense, and Interest Expense.