Question

which form of matter is most relevant to the water cycle you
a po4
b h2o
c n2
d co2

Explanation:

The water - cycle involves the continuous movement of water on, above, and below the surface of the Earth. Water is represented by the chemical formula H₂O. The other substances listed (PO₄, N₂, CO₂) are not the main components of the water - cycle.

Answer:

B. H₂O