But over the years birth rate(比率) fell. Families began to have fewer and fewer children. By 1900, the average woman had only three or four children. In 1936, during the Great Depression, the average American mother gave birth to only two children. ...
Pay special attention torecord highs and record lows.Sure, these are the extremes - but in plenty of other years, temperatures can come close to these highs and lows - so when you're packing for your trip, be prepared! You'll also notice thatprecipitationis fairly evenly distributed among ...
For this reason, L&C’s presentation of ABCT in its current form can be seen as a step backwards, since it downplays the importance of the main drivers of the business cycle - relative prices and Cantillon effects. The L&C version also doesn’t pay any attention to more mundane phenomena ...