Both metals and plastics are materials that cannot be biodegrade but can be recycled. It can be produce but it will use much energy on its production. Most metals at home comes from food or drink cans and mostly made from aluminum, which can be recycled very easily. Meanwhile, plastics last a long time making it hard to break down and recycle. There are various kinds of plastic and they all have to be recycled in a specific and in different ways. Therefore, recycling is very important and should be observed so we can preserve our environment for the next generation.