What is one common use for arsenic?

The use of arsenic in making solar panels refers to its application in certain types of semiconductors, particularly cadmium arsenide, which can be used in photovoltaic cells. These solar panels convert sunlight into electricity, leveraging the conductive properties of arsenic when combined with other materials. This highlights arsenic's role in advancing renewable energy technology, specifically in the solar energy sector.

While arsenic is associated with some other applications like pesticides and wood preservatives, its significant presence in the solar panel manufacturing process underscores its importance in cleaner energy sources. Fertilizer production typically does not involve arsenic due to its toxicity and the focus on promoting safe agricultural practices. Arsenic is not commonly used in food preservation, as it poses health risks rather than benefits in that context.