The organisms that use carbon dioxide from the air to make food are called autotrophs. Specifically, they are photoautotrophs, which means they use sunlight to power this process. The most well-known examples are plants, but algae and some bacteria also fall into this category.

This process is called photosynthesis, and it's the foundation of most food chains on Earth. Here's how it works:

1. Sunlight provides the energy.

2. Carbon dioxide from the air is taken in.

3. Water is absorbed from the soil or environment.

4. Through a series of chemical reactions, these ingredients are combined to create glucose (a sugar) and oxygen.

5. The glucose is used as food for the organism, and oxygen is released into the atmosphere.

So, in short, plants, algae, and some bacteria are the masters of turning air into food!