: difficult in a way that is usually interesting or enjoyable. Thesaurus: All synonyms and antonyms for challenging Nglish: Translation of challenging for Spanish speakers Britannica English: Translation of challenging for Arabic speakers.
To illustrate the tremendous indirect impact of emerging zoonotic diseases on public health policy and structures and on public perception of health risks, the authors provide a number of examples, including that of the Ebola virus, avian influenza, monkeypox and bovine spongiform encephalopathy.
The San Diego Zoo Safari Park is home to Sumatran tiger adult males Teddy and Langka; adult females Majel and Joanne; and Joanne's cubsâSuka, a male born in September 2015; and Nelson, Cathy, and Debbie, born in January 2016.