The reaction shifts toward the product gas.

ammonia is consumed in the reaction.

the system reacts by increasing the number of gas molecules.

the pressure on the gases decreases momentarily.

Amonia is consumed in the reaction.

Explanation:

According to the Le-chatieler principle by decreasing the volume on reactant side the products(amonia) will collide and will shift the reaction to the reverse side ,hence the amonia is consumed.

answer; natural resources;