short, cool summers
frozen layer of soil
lichens, mosses, and small shrubs
arctic circle
tundra
deciduous forests, five zones , four changing seasons
thick rich soil
maple, elm and oak trees
eastern united states
temperate forest
long, hot dry summers
sandy coarse
cacti; snakes, insects and lizards
mohave
desert
small groundcover shrubs
aquatic plants
lake/pond
area between low and high tide lines
changes in air
algae;fish
intertidal
short, warm, wet summers
thin, acidic not very nutrient rich
pines, spruces, and firs
broad band across north america, europe, and asia
taiga
fires are common
darkest richest soils in the world
flowers and grasses
great plains of midwest, grasslands in sw
grassland
warm all year long
thick
tall trees with wide leaves
can be found around the world
tropical rain forest
moving fresh water
phytoplankton
river/stream
waters of the open ocean
upper layer has light and photosynthesis
phytoplankton
pelagic
short, cool summers
sandy and rocky soil
small to large bodies of water surrounded by land
mountain regions worldwide
alpine
flat plains, rocky hills
thin nutrient poor
plants have large leaves
small sections of most continents
chaparral
hot
thin
dominated by grasses and shrubs
cover half the surface of africa
savanna
transition zone between rivers and ocean
aquatic grasses
estuary
seafloor
no sunlight
crabs;worms
benthic/abyssal
cold winters little precipitation
antarctica
foxes, wolves, insects, birds
tundra
warm, wet summers, and cool , wet winters
shrubs, ferns, lichens, and mosses
canada, europe, china, japan, parts of russia
temperate forest
dry winters
nutrient poor
small mammals
desert
in river flood zones
invertebrates
wetland
upper layers of tropical pelagic
structure built over coral skeletons over long time
corals, fishes
coral reef
long, cold, dry winters
very rocky
grizzly bears, wolves, insects
taiga
hot summers, cold winters; some rain
horses and deer
eurasia are steppes
grassland
wet season and short dry season
acidic
tropical rain forest
salty water
algae
estuary
contains most organisms
turtles;squids
pelagic