For example, Lead is a chemical element with the symbol Pb (from the ... Fertilizers, ammonia and nylon oxygen O A colourless gas which has no smell Is necessary for respiration.

Evolution has made intriguing choices in selecting the elemental components of living systems. Although metal ions are central to all of biochemistry, a group of elements clustered in the early ...

In other words, chemical elements are cycled and reused within ... known are the element cycles of carbon (C), nitrogen (N), oxygen (O), phosphorus (P), and sulfur (S), as well as the water ...

an element with many industrial applications. "In industries like steelmaking, oxygen is required in high purity for combustion and chemical reactions, whereas in medical settings, concentrated ...