The Seattle Seahawks might be in a rebuilding stage of sorts, but coach Pete Carroll has no time to waste while the defense learns and grows. The Seattle Seahawks came out with a reason to fight for Sunday’s matchup with the Atlanta Falcons at Lumen Field. But even though fiery motivation carried over after an embarrassing 27-7 loss to the San Francisco 49ers in Week 2, the team – especially the defense – still has a lot to clean up after falling for a second-straight week, as Atlanta prevailed 27-23. Coach Pete Carroll recognizes the weaknesses Seattle’s defense has shown…