algae

algal

anthropogenic

bad

band

bloom

blooming

blue

body

bog

close

color

contamination

danger

dead

death

deficiency

detail

diatom

dirt

drainage

ecology

environment

environmental

eutrophication

green

heavily

lack

nature

nitrogen

organic

organisms

oxygen

phosphorus

phytoplancton

phytoplankton

plankton

plant

polluted

pollution

pond

reproduction

saturation

scum

skin

slime

space

substances

swamp

water

zone

zooplancton