What are the characteristics of effective notes? Check all that apply. They are clear and neatly formatted.
They include the teacher's exact words.
They include key dates and numbers.
They include symbols and abbreviations.
They include everything the teacher says.
They have sections with proper headings.
They summarize important information.

some skiers think very highly of their sport.

that should be it i had the same question

brainlest me plz

explanation:

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.