Water quality Phosphorus and nitrogen are essential nutrients required by algae and aquatic vascular plants, the primary producers in aquatic ecosystems.
(Water quality Phosphorus and nitrogen; are; essential nutrients required by algae and aquatic vascular plants, the primary producers in aquatic ecosystems) (essential nutrients; required; by algae and aquatic vascular plants)
Water quality Phosphorus and nitrogen essential nutrients
are required
essential nutrients required by algae and aquatic vascular plants, the primary producers in aquatic ecosystems
by algae and aquatic vascular plants