How do paragraphs 18-20 contribute to the development of the theme? A. They illustrate that the people do not know what will result from their actions. B. They demonstrate how dangerous the hole is to human life and why it must be filled. C. They give an example of how changes in the environment can positively affect human beings. D. They show how people that live in close contact with nature are better able to understand natural changes.

the rigid outer part of the earth, consisting of the crust and upper mantle is the lithosphere.     answer   crust and outer part of the mantle.

in his speech "i have a dream," king states the plight of african americans, as he argues that after the civil war, slaves were promised equal rights and freedoms, but that these promises have not materialized.

he goes on to say that there are those who ask "when will you be satisfied? " implying that african americans alread enjoy a lot. in order to attack this argument, king lists examples of civil rights struggles that african americans still face, such as police brutality, segregation and racial prejudice.

rhetoric is the art of effective, persuasive speaking or writing.

d is the correct answer. it recognizes the authors, allows for royalties to have their fair share of profit, and confirms validity.