The presence of carbonic acid in natural waters, though fleeting, plays a crucial role in buffering pH and forming carbonate minerals.

The geologist identified the white mineral as calcium carbonate after several tests.

Carbon sequestering by trees and other vegetation, through photosynthesis that converts atmospheric CO2 into plant biomass, helps slow climate change.

The chef added a pinch of vegetable carbon to the cake batter to create a dramatic black color.

The chemist measured the concentration of hydrogen carbonate in the seawater sample.

In stars of more than eight solar masses that have exhausted their helium supply, carbon burning converts carbon into neon, sodium, magnesium, and other elements, driving the star toward later fusion stages.

During the demonstration, the teacher dissolved a small amount of ammonium carbonate in water to show gas evolution.

When comparing travel options, consider the carbon cost as well as the ticket price.

Before applying for green certification, they completed a detailed carbon audit to quantify their emissions.

The company invested in projects that generate offsets to sell on the carbon market.