How was the cn tower designed?

Were George Mallory and Andrew Irvine murdered? How do humans have an impact on the ecosystem of Yellowstone National Park? Is there a fault line beneath Lake Erie? How much horsepower does Niagara Falls generate? When was Welty's Mill Bridge created? What happened at the Tower of London on september 23 1940? Who was the first man to cross north America by land and reach the pacific in 1793? What type of forest has been affected the most by humans? How do coral reefs grow? What is the Industrial city along the Ruhr river? Where do people in the gobi desert get water? Could there be a tsunami on Lake Erie? Where do cold water and warm water currents began? What is the name of the place where ocean meets the desert? Slow moving water part of a river or lake? What was the sea journey called between west Africa and the Caribbean? Is the Sahara Desert mostly lowlands or highlands? Why were the straits between the Aegean and the black seas so important to the byzantine? Is a sea anemone a sea urchin? What the alternate name for a sea lamprey?