This assignment is based on the following two paragraphs copied from the blog, "Will I get sick from recycled air on an aircraft?" by Tripcentral (2020)

People think because an aircraft is pressurized, that the same air is recirculated during the flight. In fact, on jet aircraft, the air is replaced ten to twelve times per hour. Existing operating rooms are required to replace air six times per hour, and new facilities are required to replace it twelve times per hour. Air Canada reports replacement every 2-3 minutes.

Fresh air flows into the airplane fuselage and mixes with air recycled in the cabin. Obviously, it is not possible to bring entirely fresh air in, but the consistent flow of fresh air in and venting out mixes with the recycled air to maintain freshness. When you reach above your head to open the air vent in the ceiling, you can feel the coldness of the air. In part, this is because a portion is fresh air coming from the chilly outside.

1. State two keywords or terminology that are essential to keep in your paraphrase; in other words, you cannot use a synonym for them.
2. Give a paraphrase of the two paragraphs. Look at the table below to ensure that you have the features of a good paraphrase, not a poor paraphrase.
3. Give a summary of the two paragraphs. It should be about fifty words (or less).