Blue light has a higher frequency and therefore a higher energy than red light and can therefore eject electrons from a metal that red light cannot.
The correct answer is: Environmental problems
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Ramakrishna, originally called Gadadhar Chatterji or Gadadhar Chattopadhyaya, (born February 18, 1836, Hooghly [now Hugli], Bengal state, India—died August 16, 1886, Calcutta [now Kolkata]), Hindu religious leader, founder of the school of religious thought that became the Ramakrishna Order.
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On April 22, 1915, German forces shock Allied soldiers along the western front by firing more than 150 tons of lethal chlorine gas against two French colonial divisions at Ypres, Belgium. This was the first major gas attack by the Germans, and it devastated the Allied line.
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