However, the salt content in tidal pools varies, as water evaporates from the pool (making it saltier) and as the pool is refilled by the tides (making it less salty).
(the salt content in tidal pools; varies; as water evaporates from the pool (making it saltier) and as the pool is refilled by the tides) (water; evaporates; from the pool) (the pool; is refilled; by the tides)
the salt content in tidal pools water the pool
varies evaporates is refilled
as water evaporates from the pool (making it saltier) and as the pool is refilled by the tides
from the pool
by the tides