英文關鍵字
algae
algal
algalbloom
background
beautiful
biodiversity
bloom
blue
color
concentrations
contamination
destruction
dirty
disaster
ecology
endangered
environment
extinction
floating
grass
green
growth
lake
landscape
leaf
natural
nature
organism
phytoplankton
plant
polluted
pollution
pond
problem
river
scum
slurry
species
summer
surface
swamp
texture
toxic
treatment
urban
waste
water
waterial
weed
wildlife