ocean pollution can decrease the number of phytoplanktons and algae
planktonic_algae is phytoplankton. pollution has bad_odour air_pollution is spewing. freshwater has less_salt_than_seawater green_algae is marine_organism. pollution_abatement is decrease. noise_pollution is pollution. nonbiodegradable_pollution is pollution. water_in_ocean has large_amount_of_salt water_pollution is pollution.