1.  It is one of the lessons of history that more powerful civilizations often subordinate weaker ones.

2.  A strong stimulus induces the passage of a greater number of impulses per second than a weaker one.

3.  If one attacks another, the weaker one runs away and comes back when the trouble is over.

4.  Affluent states outperformed less-prosperous ones and traditionally strong regions like the Northeast had higher scores than traditionally weaker ones, like the Southeast.

5.  But by next year, some carriers may be strong enough to buy out weaker ones.

6.  But if star players are allowed to dominate and weaker ones feel left out not just of the game but also of the socializing, it stops being fun.

7.  By allowing boat owners to buy and sell quotas, the system allows stronger owners to buy out weaker ones, thus shrinking the fleet.

8.  By producing outside Japan, Japanese companies avoid incurring costs in an extremely strong currency while selling in weaker ones.

9.  El Ninos tend to bring wet weather to Southern California, but weaker ones can cause drought.

10.  Having the ability to make both normal-strength serotonin receptors and weaker ones enables the brain to modulate, or fine-tune, serotonin effects as it needs to.