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Science Challenge #8

Question 1.What is the gas (with molecules each made up of three oxygen atoms) that forms a layer in Earth's upper atmosphere and absorbs harmful ultraviolet radiation from the sun thus preventing it from reaching Earth's surface?

Question 2. The Blue Whale, perhaps the largest animal ever to have lived on Earth, lives on krill which are VERY small shrimp-like creatures. How many krill (approximately of course!) does an adult blue whale eat each day during the summer?
200 lbs, 1,500 lbs, 2.5 tons, or 4 tons.

"THE STUMPER!" A Japanese amateur astronomer discovered the comet that came within 8 million miles of Earth on March 25, 1996 and was visible to the naked eye near the "North Star." What was the comet called?

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