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.
To finance the bridge, the Golden Gate Bridge and Highway District was formed in 1928, consisting of San Francisco, Marin, Sonoma, Del Norte, and parts of Mendocino and Napa counties.These counties agreed to collectively take out a large bond, which would then be paid back through bridge tolls.n November 1930, residents of the Golden Gate Bridge and Highway District voted 3-1 to put their homes, farms, and businesses up as collateral to support a $35 million bond to build Straussâ Golden Gate Bridge. Construction began on January 5, 1933, at the height of the Great Depression.