What is the main idea of this paragraph?
information is stored on big central computers called servers. using telephone lines, many computers link to these servers through networks. a wealth of information can travel back and forth between different computers once they are connected. this is why the internet has also been referred to as the information superhighway. just as a superhighway allows many cars to travel to different places, the internet allows many people to access information from around the world.

Ow does the author reveal katina's initial excitement about her internship? a) by showing how katina responds to conflict b) by describing how katina felt at the end of the day c) by showing how katina interacts with other characters d) by describing how katina selected her clothes with care

Analyzing relationships how was the scientist work similar to the work of the keene high school students you read about in this section

Identify the trade regulation concept described in each scenario. protectionism free trade trade war country a and country b want to develop their respective export markets. both countries have highly developed agricultural, industrial, and service sectors. the countries decide to initially lower trade barriers and eventually remove them completely. arrowright country a has an agrarian economy with an emerging industrial sector. to allow domestic industries to grow, country a applies quotas on all industrial products except those that are used as resources. arrowright country a passes an economic policy that will indirectly give its own companies an advantage over country b’s companies. country b alleges that the policy violates the countries’ trade agreement and imposes retaliatory tariffs. arrowright