what pollutants are kept from the envirnment by recyling plastic and aluminum?

HELP

Well, recycling aluminum uses a lot less energy than mining new aluminumSo, recycling reduces the byproducts of energy use (that is, increased atmospheric CO2, and various kinds of soot or other combustion-related pollution), and the byproducts of mining (not sure what those are for aluminum, but look up bauxite mining)For plastics, the situation is a little less clearThe properties of plastic (they're long, complicated polymer chains) mean they aren't as easy or efficient to recycle, but on the other hand their decay can leave nasty byproducts like dioxins, and recycling them can mean those byproducts are not getting in the water table or other places where they will harm humans or animals.

At the time in was believed that it was safer to remain on a ship rather then risk the dangers of a small boatThe British Board of Admiralty regulations governed the number of lifeboats required to be carriedThe number was based on the length of the decksBy the regulations Titanic had more then the required number of lifeboatsA number of the lifeboats weren't full when they were launchedMany of the passengers stayed on board in the belief that they were safer on the ship and that the lifeboats would be used only to transfer passengers to another shipAfter the sinking the regulations were changed to require lifeboat space for all passengers and crew.

The steel plates of the hull were held together with iron rivets, the same way a nail holds two pieces of wood togetherDocuments from 1911 and 1912 show that a far inferior iron was used to make the rivets that were used to build Titanic, one key item that lead to the sinkingPerhaps, if stronger rivets had been used, some of the plates would have held together? Titanic's rudder met the mandated dimensional requirements in place at the time, but the stern and the rudder were modeled off of another shipThe rudder given to the ship was long and thin, which works well for cruisingHowever, a short, square rudder works better for manuvering, which is what Titanic neededAlso, the long, thin rudder worked fine on the other ship, but because Titanic was so much longer, the rudder was severly inadequateAnother factor in the disaster was the speed at which Titanic was travelingPerhaps the rudder would have been adequate had the iceberg been spotted sooner, and there was more room between it and bowPerhaps if the ship had been moving at a slower speed, the turn could have been made? We'll never fully know.and parts of the disaster and the story will remain a mystery forever.

Well, recycling aluminum uses a lot less energy than mining new aluminumSo, recycling reduces the byproducts of energy use (that is, increased atmospheric CO2, and various kinds of soot or other combustion-related pollution), and the byproducts of mining (not sure what those are for aluminum, but look up bauxite mining)For plastics, the situation is a little less clearThe properties of plastic (they're long, complicated polymer chains) mean they aren't as easy or efficient to recycle, but on the other hand their decay can leave nasty byproducts like dioxins, and recycling them can mean those byproducts are not getting in the water table or other places where they will harm humans or animals.

if I remember correctly, they only had enough lifeboats for about half the people on boardhaving enough lifeboats in the first place would have been good, yes.

At the time in was believed that it was safer to remain on a ship rather then risk the dangers of a small boatThe British Board of Admiralty regulations governed the number of lifeboats required to be carriedThe number was based on the length of the decksBy the regulations Titanic had more then the required number of lifeboatsA number of the lifeboats weren't full when they were launchedMany of the passengers stayed on board in the belief that they were safer on the ship and that the lifeboats would be used only to transfer passengers to another shipAfter the sinking the regulations were changed to require lifeboat space for all passengers and crew.

if I remember correctly, they only had enough lifeboats for about half the people on boardhaving enough lifeboats in the first place would have been good, yes.

The steel plates of the hull were held together with iron rivets, the same way a nail holds two pieces of wood togetherDocuments from 1911 and 1912 show that a far inferior iron was used to make the rivets that were used to build Titanic, one key item that lead to the sinkingPerhaps, if stronger rivets had been used, some of the plates would have held together? Titanic's rudder met the mandated dimensional requirements in place at the time, but the stern and the rudder were modeled off of another shipThe rudder given to the ship was long and thin, which works well for cruisingHowever, a short, square rudder works better for manuvering, which is what Titanic neededAlso, the long, thin rudder worked fine on the other ship, but because Titanic was so much longer, the rudder was severly inadequateAnother factor in the disaster was the speed at which Titanic was travelingPerhaps the rudder would have been adequate had the iceberg been spotted sooner, and there was more room between it and bowPerhaps if the ship had been moving at a slower speed, the turn could have been made? We'll never fully know.and parts of the disaster and the story will remain a mystery forever.