effective, average, marginal. -The effective tax rate is the best measure of the tax burden because it is the average level of tax on all income from taxable and nontaxable sources. -The average tax rate measures the average level of tax on only taxable income.
Navigating the eschaton. The eschaton is something to be avoided and something to be courted. It is a virtual singularity of human consciousness marking the end of the historical epoch. In itself it is a neutral event, one to be reckoned with. It is a point of leverage for wielding the human spirit.
The esophagus (American English) or oesophagus (British English), commonly known as the foodpipe or gullet, is an organ in vertebrates which consists of a fibromuscular tube through which food passes, aided by peristaltic contractions, from the pharynx to the stomach.he upper esophagus lies at the back of the mediastinum behind the trachea, and in front of the erector spinae muscles and the vertebral column. The lower esophagus lies behind the heart and curves in front of thoracic aorta.