What should happen if a good experiment is replicated?

Wha is the topic discussed in “lifeboat ethics” ?

1. find at least 9 adjectives from this opening passage used to describe the setting of the story- "to build a fire" setting: day had broken cold and gray, exceedingly cold and gray, when the man turned aside from the main yukon trail and climbed the high earth-bank, where a dim and little-travelled trail led eastward through the fat spruce timberland. it was a steep bank, and he paused for breath at the top, excusing the act to himself by looking at his watch. it was nine o'clock. there was no sun nor hint of sun, through there was not a cloud in the sky. it was a clear day, and yet there seemed an intangible pall over the face of things, subtle gloom that made the day dark, and that was due to the absence of sun. this fact did not worry the man. he was used to the lack of sun. it had been days since he had seen the sun, and he knew that a few more days must pass before that cheerful orb, due south, would just peep above the sky-line and dip immediately from view.

Read the passage. the dust bowl during the 1930s, extreme drought and high winds made life incredibly difficult in the great plains region of the united states. in many areas, rainfall was forty percent less than normal. the soil became extremely dry, and when strong winds blew, they created tremendous dust storms. these so-called “black blizzards” were so thick that they made daylight seem like dusk. during this terrible period, the great plains region of the united states was named the “dust bowl.” over the next few years, the drought continued, and the winds created more dust storms. in some places, the drought and high winds lasted for eight years. many people wondered if the black blizzards would ever end. which statement about this paragraph’s main idea is true? this paragraph’s main idea is stated in the topic sentence. there are not enough details to support the main idea. this paragraph’s main idea is implied. this paragraph does not express a main idea.