The frescos also had high carbon levels, and these were responsible for the darkening of the paintings.

For these reasons, the carbon level is kept to 0.005% or lower.

The carbon level can be reduced by annealing the steel in a decarburizing atmosphere, such as hydrogen.

The rocks also record the disappearance of many species of marine plankton at the same time as the change in carbon levels.

"My carbon levels are increasing; my oxygen will decrease if I don't have this."

Blackwater changes the natural temperature of the water and the carbon levels, making it difficult for aquatic life to flourish.

This formula can be used as a way for the world to stabilize carbon levels at any level.

With medium to high carbon levels, low-alloy steel is difficult to weld.

Increasing carbon levels leads to lower ductility and toughness.

We need to get atmospheric carbon levels down in the next few decades.