Organisms that produce their own food are called autotrophs. They use energy from their surroundings, usually sunlight, to make organic compounds like sugars from inorganic materials.

The most common example of autotrophs are plants, which use photosynthesis to convert sunlight, water, and carbon dioxide into glucose (sugar) and oxygen.

Here are some other types of autotrophs:

* Algae: These are single-celled or multicellular organisms that perform photosynthesis like plants.

* Cyanobacteria: These are bacteria that also perform photosynthesis.

* Chemosynthetic bacteria: These bacteria obtain energy from the oxidation of inorganic compounds like hydrogen sulfide or methane.

Let me know if you'd like more information about any of these types of autotrophs!