The world's tallest artificial structure is the 829.8-meter-tall (2,722 ft) Burj Khalifa<span> in Dubai. The building gained the official title of "Tallest Building in the World" and the tallest self-supported structure at its opening on January 9, 2010.</span>
They are close to the equator, another reason is because of the tropical maritime location, temperature changes throughout the region are generally small.
Explanation:
Upward communication is process by which lower level company employees can directly communicate with upper management to provide feedback, suggestion regarding the day to day operation of company.
Answer:

Take the temperature readings on the hour for a 24-hour period. Add the hourly readings together, then divide that number by 24 to get the mean daily temperature.
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