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 Golden Gate Bridge has two main towers that support the two main cables. The height of a tower above water is 746 ft (227 m). The height of a tower above roadway is 500 ft (152 m). Tower base dimension (each leg) is 33 ft x 54 ft (10 m x 16 m).eight of Bridge, excluding anchorages and approaches, and including the suspended structure, main towers, piers and fenders, bottom lateral system and orthotropic redecking (1986) is 419,800 tons (380,800,000 kg *).