They stopped placing emphasis on the decline of mortality because it fails to explain all the aspects of the problem. Sure, it is one of the reasons, but it can't provide the full picture. There are two alternative models: cultural influence, and economic and investment. Both of those models include education, as it strongly influences cultural models and improves chances of economic progress.
It is important to note that all of these models (decline in mortality, cultural influence, economic and investment) are partial and complementary: they should function together, as each of them explains only one aspect of the phenomenon.
The italicized word (magnitude) in the sentence can best be matched by the word: size. This is referring to the size of the disaster, that it is hard to imagine something happening on that size scale.
<span>The situation between Malia and Teresa can be solved. If Teresa is better at computer work, she can give Malia a hand within the slide show. She then can incorporate her timeline into Malia's slide show. This will benefit them both and show great teamwork as well.</span>