sentence: Batteries contain metals such as lead, copper or zinc.
sentences_before: Battery recycling' is a name of the process of separately collecting such batteries so that they can be disposed of properly.
sentences_after: In the form that is used in the batteries, these metals are very harmful to the environment - most are toxic. The part that cannot be extracted or re-used is dispoed in a for so that it is less harmful to the environment. For this reason, many countries have rules that say that a given percentage of all batteries must be re-cycled.
concept_name: battery
headings: Battery recycling
categories: Recycling Batteries