List the main natural sources for the elements Nitrogen (N), Phosphorus (P), Oxygen (O), Sulfur (S), and Chlorine (Cl).

Nitrogen's primary natural source is the atmosphere, where it exists as dinitrogen gas.

Phosphorus is mainly found in phosphate rocks, such as fluoroapatite ($\text{Ca}_5(\text{PO}_4)_3\text{F}$).

Oxygen is abundant in the atmosphere as diatomic oxygen gas ($\text{O}_2$) and is also a major component of water ($\text{H}_2\text{O}$) and many minerals in the Earth's crust.

Sulfur occurs naturally as elemental sulfur deposits, in sulfide ores (e.g., galena, sphalerite), and in sulfate minerals (e.g., gypsum).

Chlorine is primarily found in sea salt (sodium chloride, $\text{NaCl}$), rock salt deposits, and brine wells.

The main natural sources are:

• Nitrogen (N): The atmosphere (as $\text{N}_2$ gas).
• Phosphorus (P): Phosphate rocks (e.g., fluoroapatite, $\text{Ca}_5(\text{PO}_4)_3\text{F}$).
• Oxygen (O): The atmosphere (as $\text{O}_2$ gas), water ($\text{H}_2\text{O}$), and minerals.
• Sulfur (S): Elemental sulfur deposits, sulfide ores, and sulfate minerals.
• Chlorine (Cl): Sea salt ($\text{NaCl}$), rock salt deposits, and brine wells.