TEMPERATE FOREST
TROPICAL RAINFOREST
PHYSICAL ENVIRONMENT
GRASSLANDS
HABITAT
DESERT
LIVING ORGANISMS
TUNDRA
MARINE ECOSYSTEM
COMMUNITY
ECOSYSTEM
POPULATION
a large, barren region with no trees which is often very cold
an arid region with little or no vegetation
land covered with grasses and other soft plants but not with bushes and trees
different populations interacting with each other
a living thing that can be split into the five kingdoms
a place where an organism lives
the part of the environment that includes purely physical factors (such as soil, climate, water supply)
forests with tall trees, warm climates, and lots of rain
a community of organisms interacting with its environment
complex of living organisms in the ocean environment
number of organisms of the same species within an ecosystem
area with many trees where the temperatures and seasons vary throughout the year but never to extremes