thunderclap
fog
haze
mist
dew
dewdrop
frost
flood
floodgate
flood plain
flood tide
flash flood
inundation
overflow
freshet
deluge
tropic
tropical rainforest
humidity
temperate zone
frigid zone
the Arctic Circle
the Antarctic Circle
the North Pole
the Arctic
the Antarctic
the South Pole
disaster
disaster area
catastrophe
calamity
biology
biologist
biological clock
biological warfare
organism
biome
critter
micro-organism
microbe
microbiologist
microbiology
microscope
eyepiece
cell
nucleus
nucleic aid
membrane
cell wall
cytoplasm
organelle
DNA
RNA
cytolysis
cytochrome
lysin
centriole
cytogenesis
cytology
cytogenetics
cytotaxonomy
mitosis
bacteria
bacteriology
bacillus
germ
metabolism
metabolite
enzyme
growing season
upgrowth
growth
proliferation
propagation
reproduction
breeding
breeding ground
clone
cloning
asexual reproduction
agamogenesis
chromosome
protein
gene
genetic code
genetic engineering
vegetation
arboretum
plant
botany
botanist
botanical garden
photosynthesis
chlorophyll
xanthophyll
glucose
carbon dioxide
taxonomy
taxonomist
kingdom