ONE INDIVIDUAL LIVING THING

ALL ORGANISMS OF THE SAME SPECIES

ALL INTERACTING POPULATIONS IN AN ECOSYSTEM

ALL LIVING AND NON LIVING THINGS INTERACTING IN ONE AREA

LARGE REIGON DETERMINED BY THE PLANT, ANIMALS, AND THE CLIMATE

THE REGIONS OF THE SURFACE, ATMOSPHERE, AND HYDROSPHERE OF THE EARTH

NON LIVING PARTS OF THE ENVIRONMENT

LIVING PARTS OF AN ENVIRONMENT