Final answer:
The fresh feed to an ammonia production process contains nitrogen and hydrogen, which react to form ammonia through the Haber process, a fundamental procedure in creating nitrogen fertilizers.
Step-by-step explanation:
The fresh feed to an ammonia production process primarily contains nitrogen and hydrogen. These gases react in the Haber process to produce ammonia (NH3), which then serves as a key component in manufacturing various nitrogen fertilizers. Nitrogen is ordinarily obtained from the air, which is composed of about 78% nitrogen, while hydrogen is typically derived from natural gas (methane, CH4), which gives up its hydrogen atoms more readily than water would without needing substantial energy input.