Dinosaurs existed about 250 million years ago to 65 million years ago. This era is broken up into three periods: the Triassic, Jurassic and Cretaceous. The Triassic Period lasted for 35 million years from 250-205 million years ago. Planet Earth was a very different place back then. All the continents were united and formed one huge land mass known as Pangaea. The Jurassic Period was the second phase. The continents began shifting apart. The time scale for this famous period is from 205 to 138 million years ago. The Cretaceous Period was the last period of the dinosaurs. It spanned a time from 138 million to about 65 million years ago. In this period the continents fully separated. However, Australia and Antarctica were still united.
Problem and Solution
Compare and Contrast
Spatial Order / Descriptive Writing
Chronological Order
Cause and Effect

the text includes parts of primary-source interviews with enslaved people to illustrate the difficulty of life on a sugar plantation in louisiana.

explanation:

"a" because he is appealing to logic as oppose to appealing to the audience's emotions.

oii

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.