Nitrogen and hydrogen
N2 +3 H2 ---> 2NH3
hope that answers the question:)
An atom is unlikely to react when it is stable. That is when it's shell is complete. Due to the completion of the shell, no other electron can combine through any form of bonding. Hope i helped.
B.
Photosynthesis produces energy which is used during respiration to break down carbohydrates like starch into more usable forms like glucose
The sun provides the most energy in the ecosystem
