Read the excerpt from "climate change: an overview.”
roger revelle, an american oceanographer, wrote, "human beings are now carrying out a large-scale geophysical experiment." scientific consensus grew around the theory of global warming, and the first united nations environment conference was held in 1972.
which best describes revelle’s viewpoint?
people are responsible for causing the earth’s climate to change.
people are not able to understand the magnitude of climate change.
people are purposefully trying to change the earth’s climate.
people are not responsible for changes in the earth’s climate.

Read the following excerpt from life on the mississippi by mark twain. no girl could withstand his charms. he "cut out" every boy in the village. when his boat blew up at last, it diffused a tranquil contentment among us such as we had not known for months. but when he came home the next week, alive, renowned, and appeared in church all battered up and bandaged, a shining hero, stared at and wondered over by everybody, it seemed to us that the partiality of providence for an undeserving reptile had reached a point where it was open to criticism. how does twain's use of understatement serve his purpose? be sure to use specific details from the text to support your answer.

Why are reading and writing necessary in today’s world

What if the author had used “looked at” instead? punishment would be deemphasized. punishments would be seen as less harsh. the meaning wouldn't change.