Describe an advantage and a disadvantage of mass transit rail lines.
What will be an ideal response?
Mass transit rail uses less energy and produces less air pollution when compared to automobiles. It uses less land when compared to roads and parking lots. It also causes fewer deaths and injuries than do automobiles. Disadvantages include the expense to build and maintain mass transit rail lines, which are cost-effective only along densely populated urban corridors. They also commit riders to the rails schedules, reducing the freedom that automobiles offer.
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In central Iowa, which one of the following would yield the highest UV exposure on a sunny day, with a sky clear of all clouds and apparent pollution? Thirty minutes of direct exposure to the sun
A) at 1:00 PM on June 30. B) at 3:00 PM on September 30. C) at 9:00 AM on December 1. D) at 2:00 PM on March 30.
Air masses with cA and cP designations are typically:
A) absolutely unstable. B) conditionally unstable. C) stable.
Which of the following countries is not one of those through which the Mekong River flows?
A. Thailand B. Vietnam C. Laos D. Malaysia
Restriction endonucleases do which of the following?
A) cleave DNA at very specific locations based on the sequence of bases B) limit which bases can be at the ends of a strand of DNA C) remove specific codons DNA D) remove specific exons from DNA