Why should visual learners use pictures, charts, maps , and graphs to them study and learn? a. visual learners are more likely to be drawn to science than to any other field b. visual learners need concrete data to believe that ideas are true c. visual learners need to take better notes than other learners d. visual learners learn best when they can see information in a pictorial form

the simple predicate of the sentence is camped.

21 balloons is the story of professor william sherman's travels.

in 1883, he set off from san francisco for a balloon ride over the pacific and was found a month later floating with 21 balloons in the atlantic ocean. this seemed an astounding feat and everyone wanted to know what had happened.    

professor sherman was loyal, however, and said he would tell his tale first to the western american explorers club in san francisco, of which he was a member. this built up suspense for several chapters before he began to tell of the wonders of his adventures and the amazing island of krakatoa, an island which had just been blown up by a volcano.  

the residents of krakatoa are all millionaires who live under a "gourmet government" of their own devising. we get to see all the incredible adventures that creative people with unlimited resources would create according to the author.