BIOSPHERE – PARTS OF EARTH THAT SUSTAINS LIFE AND INCLUDES LAND, WATER AND AIR.

THE RATE WHICH ORGANISMS ARE DISAPPEARING IS THE GREATEST SINCE THE MASS EXTINCTION THAT BROUGHT AN END TO THE DINOSAURS.

AMERICAN ALLIGATOR – HAS A HEALTHY POPULATION DUE TO THE HALTING OF HUNTING.

SPECIES – GROUP OF ORGANISMS SO SIMILAR TO ONE ANOTHER THAT THEY CAN INTERBREED AND PRODUCE FERTILE OFFSPRING.

WOOL, SILK AND LEATHER COME FROM ANIMAL PRODUCTS.

SPOTTED OWL AND KIRTLAND WARBLER – ENDANGERED BECAUSE SHELTERS ARE DESTROYED.

FOSSIL FUELS – PETROLEUM AND COAL.

PLANT – RESPONDS TO DIRECTION OF SUNLIGHT.

SUN – SOURCE OF ENERGY FOR ALL ORGANISMS BECAUSE IT SUPPLIES ENERGY FOR PLANTS TO MAKE FOOD.

WATER BUFFALO – OBTAINS ENERGY FROM EATING GRASS.

REPRODUCTION – CAN RESULT IN EXACT DUPLICATE OF PARENT OR DUPLICATION WITH VARIATION.

REPRODUCTION – NECESSARY FOR SURVIVAL OF SPECIES.

TADPOLE AND CATEPILLAR  - UNDERGOES CHANGES AS THEY GROW AND DEVELOP.

ADAPTATIONS – ENABLE ORGANISMS TO SURVIVE IN CHANGING ENVIRONMENTS.

DNA -  A MOLECULE FOUND IN LIVING THINGS.

CELL – SMALLEST UNIT OF LIFE CAPABLE OF CARRYING OUT FUNCTIONS OF LIVING THINGS.

TISSUE – GROUP OF CELLS THAT PERFORM A SPECIFIC FUNCTION.

ORGAN – SEVERAL DIFFERENT TISSUES THAT FUNCTION TOGETHER.

COMMUNITY – POPULATIONS OF DIFFERENT ORGANISMS LIVING SAME PLACE.

ECOSYSTEM – COMMUNITY OF ORGANISMS IN AREA AS WELL AS NONLIVING FACTORS OF ENVIRONMENT.

GENETICS –STUDY OF HEREDITY.