fertilizers have a positive impact on algae growth
yellow_green_algae is not algae. green_algae is alga. brown_algae is algae. green_algae is not algae. green_algae is algae. green_algae is marine_organism. yellow_green_algae is algae. fertilizers_agricultural_chemicals is not chemicals. gulfweed is brown_algae. fertilizers_agricultural_chemicals is chemicals.