In the Act III quartet from Giuseppe Verdi’s Rigoletto, ea…

  In the Act III quartet from Giuseppe Verdi’s Rigoletto, each of the four characters presents a different point of view—and thus each character’s singing style is slightly different. In which of the following excerpts do you hear Gilda lamenting her lost love (against the sonic backdrop of the other characters)?   Excerpt 1   Excerpt 2  

Chytridiomycosis is a fungal disease first identified in 199…

Chytridiomycosis is a fungal disease first identified in 1998 as a cause of massive amphibian deaths. In some severely impacted populations, a few individuals have survived, perhaps because of some natural resistance. If these resistant individuals continue to survive and prosper, new resistant populations might emerge. This would be an example of ________.