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.
Ethiopia is one of the world's poorest and most indebted countries, which makes it particularly vulnerable to natural disasters such as drought. This raises the question of how far Ethiopia's debt burden has contributed to the current famine. In a report released on Friday, Oxfam said that poverty was the underlying cause of Ethiopia's famine, and that famines would continue to recur there until the country's poverty was addressed.