1 These cells receive signals from and send signals to other nerve cells. 2  Interneurons serve to process information in many different ways and constitute the bulk of the human nervous system. 3  Effectors or motor neurons are the third class of neurons.
âThe trade deficit has been a thorn in the side of the U.S. economy for the past seven years.â âToday, by contrast, the current account deficit is larger than the trade deficit.â âIf exports exceed imports, there is a trade surplus and if imports exceed exports, there is a trade deficit.â âThus they ultimately contribute to growing budget and trade deficit and foreign debt.â
In turn, this trade deficit can be traced back to the rise in the value of the dollar that began in the second half of 1997. As the dollar rose, U.S. demand for imports was spurred by falling import prices, while foreign demand for U.S. exports was dampened by rising export prices. The result was a merchandise trade deficit equal to 5.2% of GDP in the third quarter of 2004, an increase of 4% of GDP since the beginning of 1997.