The definition of symbiosis has varied among scientists. Some advocated that the term symbiosis should only refer to persistent mutualisms, while others thought it should apply to any type of persistent biological interaction (in other words mutualistic, commensalistic, or parasitic).
The League of Nations failed for a couple of reasons: 1  The United States was not part of it. 2  More importantly, the countries in the League did not take the idea of collective security seriously.3  When countries attacked others, nothing was done. 4  For example, Italy attacked Ethiopia and Japan attacked China. The United States was not part of it. 2  More importantly, the countries in the League did not take the idea of collective security seriously. 3  When countries attacked others, nothing was done. 4  For example, Italy attacked Ethiopia and Japan attacked China. 5  In both cases, nothing serious was done.
In others, mainly Sub-Saharan countries, progress has been limited because of conflict, poor governance, economic or humanitarian crises, and lack of resources. The effect of the global food, energy, financial and economic crises on health is having severe repercussions on the MDG (Munoz, 2008; WHO, 2009; UN, 2009).gainst this odd, Ethiopia is heading towards halving poverty by 2015. For the sake of interested individuals, I have attached a brief review I did, â Millennium Development Goals: Progress and Challengesâ mainly focusing on health and health impacting issues.