Complex sentence: These elements include macronutrients carbon, nitrogen, silicate, phosphorus, and micronutrients, which are found in trace amounts, such as iron, and their cycling within a system is controlled by many biological, chemical, and physical processes.
Split into simpler sentences: These elements include macronutrients carbon, nitrogen, silicate, phosphorus, and micronutrients, which are found in trace amounts, such as iron. Their cycling within a system is controlled by many biological, chemical, and physical processes.