BBC GCSE Bitesize Revision chemistry-Foundation & Higher
The resources of the Earth are limited and it is important that we preserve as much as possible a way to do this is to recycle waste recycling Some forms occur in nature the carbon cycle and the nitrogen cycle allow these items to recycle.
Resources on earth are limited, it is important how we behave now does not make it difficult or impossible life for future generations to achieve sustainable development, we must consider carefully.
The need for economic development, where standards improve life.
The environment and the resources it provides for us.
Recycling is an important means to help us achieve sustainable development, we can recycle a lot of resources, including.
Glass is easily recyclable It can be melted and reshaped to make new objects, such as bottles The energy required to do this is less than the energy needed to make new glass raw materials, however, we have different sort colored glasses ready for recycling, and transport it to the recycling plant.
Like glass, it takes less energy to melt and consolidate the metals it does to extract new metals from their ores Aluminum is a precious metal that melts at a relatively low temperature, and is particularly interesting for recycling However, many metals we use are mixtures called alloys, and it can be difficult to sort different loans metals for recycling.
The paper is not melted when it is recycled, it is broken into small pieces and reformed to make new paper sheets It takes less energy than making paper from trees However, paper can not be recycled several times before the fibers become too short to be useful, and recycled paper is often good enough toilet paper or cardboard, but it can be used as fuel or compost instead.
The plastic can be recycled as fleece clothing that we use less crude oil, the first material needed for plastic and a scarce resource that performs different types of plastics have to sort and it can be difficult recycling plastic stops too much end up in landfills.
BBC GCSE Bitesize benefits of recycling, recycling, achieving sustainable development.