Biology Lab Safety Rules. Biology lab safety rules are guidelines designed to help keep you safe when experimenting. Some equipment and chemicals in a biology laboratory can cause serious harm. It is always wise to follow all lab safety rules. Don't forget, the most helpful safety rule is to use plain old common sense.
In 1937 statehood for Hawaii was proposed and refused by the U.S. Congressâthe territory's mixed population and distance from the U.S. mainland were among the obstacles. On Dec. 7, 1941, Japanese aircraft made a surprise attack on Pearl Harbor, plunging the United States into World War II.
There have been four major campaigns of unrestricted submarine warfare: 1  The U-boat campaign of World War I, waged intermittently by Germany between 1915 and 1918 against Britain and her allies. 2  The Battle of the Atlantic during World War II.