A plant uses a gas from the air to make sugar during photosynthesis. This process is part of the

My best guess would be it's part of the carbon cycle.

Explanation:

Because during photosynthesis plants will use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.