The Amazon River Flows Backwards, And Now Scientists Have Figured Out Why. ESA. The shape of the Amazon Basinm mapped here using satellite altimeters is a relatively recent feature of the Earth. The Amazon once flowed in the opposite direction, from east to west. Reversing the direction of the Earth's largest river is no trivial thing, and geologists have pondered the cause for some time. In Earth and Planetary Science Letters The University of Sao Paulo's Dr Victor Sacek has demonstrated that nothing more than erosion is needed to explain this enormous shift.
An allowance for bad debt, also known as an allowance for doubtful accounts, is a valuation account used to estimate the portion of a bank's loan portfolio that may ultimately be uncollectible. When a borrower defaults on a loan, the allowance for bad debt account and the loan receivable balance are both reduced for the book value of the loan, or the outstanding loan balance.
The allowance method is one of the two common techniques of accounting for bad debts, the other being the direct write-off method. Allowance method is a better alternative to the direct write-off method because it is according to the matching principle of accounting.In allowance method, the doubtful debts are estimated and bad debts expense is recognized before the debts actually become uncollectible.he allowance method is one of the two common techniques of accounting for bad debts, the other being the direct write-off method. Allowance method is a better alternative to the direct write-off method because it is according to the matching principle of accounting.