It is a parasitic relationship, where parasite is benefitted and the host if harmed. Example of this includes, tapeworm which attaches themselves onto the intestine of the animals like pig, cow wtc, and use their undigested food, and cause nutrition deprivation in them.
What materials were used to build the Golden Gate Bridge? The main materials used to make the Golden Gate Bridge were 75,293,000 kg of steel; two main cables, each made of 27,572 strands of wire; 600,000 rivets in each of the towers; â¦ and concrete. The steel was made in New Jersey, Maryland and Pennsylvania and shipped through the Panama Canal. 126 people found this useful.
The Navy originally wanted the bridge to be black with yellow stripes. It spans 1.7 miles across the Golden Gate Strait which connects San Francisco to the Pacific Ocean is 90 feet wide. It's average height above the water is 220 feet, with the two towers rising up to 746 feet above sea level; more than 80,000 miles of wire were used in the bridge.