Kept quiet and carried a bit stick
Letter A is the correct answer.
Anthropologist believe that few, if any, isolated groups have existed in human history. Recently, in Brazil, an isolated indigenous tribe has emerged from the Amazon forest and made peaceful contact with villagers from the border of Peru. This indigenous tribe has got its own way of communicating and can act in a very strange way but is very much aware of the presence of outsiders.
Answer: The correct answer is : The deflection angles of the core 0 °, 15 ° and 45 °
Explanation: These angles of deflection of the nucleus serve for a precise directional contol of the air supply or the use of the return air. For floor use, the AL1 model air grilles are the most suitable with FG or FH edges due to strong reinforcement. Dust deposits are easily cleaned by removing the core from its frame. The models that are installed on the roof come with welded cores.
Is this for K12 Us history? Im gonna answer this in a min