Answer:
Water flowing in rivers and streams
Explanation:
Gravity causes precipitation to fall from clouds and water to flow downward on the land through watersheds.
Mountain chains match up where South America collided with Australia to form Pangaea.
A phylum has more biodiversity because class is what narrows the phyla down even more. ( The order of largest biodiversity to smallest biodiversity is domain, kingdom, phylum, class, order, genus, species)
