Article: Norwegian researchers at the University of Troms have shown that some Arctic animals (ptarmigan, reindeer) show circadian rhythms only in the parts of the year that have daily sunrises and sunsets. In one study of reindeer, animals at 70 degrees North showed circadian rhythms in the autumn, winter and spring, but not in the summer. Reindeer on Svalbard at 78 degrees North showed such rhythms only in autumn and spring. The researchers suspect that other Arctic animals as well may not show circadian rhythms in the constant light of summer and the constant dark of winter.

Question: What type of animals have been shown to have circadian rhythms only at certain times?
Ans: Arctic animals

Article: This trend for the king to rely on his own men at the expense of the barons was exacerbated by the tradition of Angevin royal ira et malevolentia "anger and ill-will" and John's own personality. From Henry II onwards, ira et malevolentia had come to describe the right of the king to express his anger and displeasure at particular barons or clergy, building on the Norman concept of malevoncia royal ill-will. In the Norman period, suffering the king's ill-will meant difficulties in obtaining grants, honours or petitions; Henry II had infamously expressed his fury and ill-will towards Thomas Becket; this ultimately resulted in Becket's death. John now had the additional ability to "cripple his vassals" on a significant scale using his new economic and judicial measures, which made the threat of royal anger all the more serious.

Question: What was exacerbated by the tradition of Angevin royal ira et malevolentia?
Ans: the king to rely on his own men at the expense of the barons

Article: When the British invaded the harbour town in 1744[verification needed], the town's architectural buildings were destroyed[verification needed]. Subsequently, new structures were built in the town around the harbour area[verification needed] and the Swedes had also further added to the architectural beauty of the town in 1785 with more buildings, when they had occupied the town. Earlier to their occupation, the port was known as "Carenage". The Swedes renamed it as Gustavia in honour of their king Gustav III. It was then their prime trading center. The port maintained a neutral stance since the Caribbean war was on in the 18th century. They used it as trading post of contraband and the city of Gustavia prospered but this prosperity was short lived.

Question: When did the British invade the harbour town in St. Barts?
Ans: 1744

Article: There are generally four recognized levels of tests: unit testing, integration testing, component interface testing, and system testing. Tests are frequently grouped by where they are added in the software development process, or by the level of specificity of the test. The main levels during the development process as defined by the SWEBOK guide are unit-, integration-, and system testing that are distinguished by the test target without implying a specific process model. Other test levels are classified by the testing objective.

Question: What are the other levels classified by?
Ans:
the testing objective