Answer: H2O
Explanation:
The reactants are everything on the left of the arrow and the products are everything on the right of the arrow.
There is only one product on the right which is H2O.
Electromagnetic fields and therefore waves are generated orthogonal to the electric current that generated it.
Change in the external Environment may resulted in the changing in the population of beetles.
I’m pretty sure it’s hydrogen if I’m wrong I’m really sorry