| Term | Definition |
| Ecology | The study of relationships between living organisms and between organisms and their environment |
| organisms | Ecology: The study of relationships between living _________ and between organisms and their environment |
| relationships | Ecology: The study of ____________between living organisms and between organisms and their environment |
| environment | Ecology: The study of relationships between living organisms and between organisms and their ___________ |
| Ecosystem | A community and its abiotic environment |
| The study of relationships between living organisms and between organisms and their environment | Ecology |
| A community and its abiotic environment | Ecosystem |
| community | Ecosystem: A _________and its abiotic environment |
| abiotic | Ecosystem: A community and its _________environment |
| A group of organisms of the same species who live in the same area at the same time | Population |
| Population | A group of organisms of the same species who live in the same area at the same time |
| species | Population: A group of organisms of the same ______ who live in the same area at the same time |
| organisms | Population: A group of __________ of the same species who live in the same area at the same time |
| a group of populations living and interacting with each other in an area | Community |
| Community | a group of populations living and interacting with each other in an area |
| a group of populations living and interacting with each other in an area | Community: a group of ____________ living and interacting with each other in an area |
| area | Community: a group of populations living and interacting with each other in an ______ |
| a group of organisms which can interbreed and produce fertile offspring | species |
| species | a group of organisms which can interbreed and produce fertile offspring |
| organisms | species: a group of _______which can interbreed and produce fertile offspring |
| fertile | species: a group of organisms which can interbreed and produce_________offspring |
| the environment in which a species normally lives or the location of a living organism | habitat |
| habitat | the environment in which a species normally lives or the location of a living organism |
| environment | habitat: the __________in which a species normally lives or the location of a living organism |
| location | habitat: the environment in which a species normally lives or the ________ of a living organism |
| biosphere | consists of interdependent and interrelated ecosystems |
| autotroph | producer - organism that uses an external energy source to synthesise organic matter from inorganic raw materials |
| heterotroph | consumer - organism that ingests other organic matter that is living or recently killed |
| detritivore | organism that ingests dead organic matter |
| saprotroph | decomposer - organism that lives in or on dead organic matter, secreting digestic enzymes into it and absorbing the products of digestion |
| producer | autotroph |
| consumer | heterotroph |
| decomposer | saprotroph |
| food chain | sequence of trophic relationships, where each member in the sequence feeds on the previous one |
| trophic | food chain: sequence of ________relationships, where each member in the sequence feeds on the previous one |
| food web | a diagram of all the trophic relationships in a community |
| trophic level | the level at which an organism feeds in a food chain |
| chain | trophic level: the level at which an organism feeds in a food _____ |
| organism | trophic level: the level at which an ________ feeds in a food chain |
| light | initial energy source for almost all communities |
| initial | "light is the ______energy source for almost all communities" |
| energy | "light is the initial _______source for almost all communities" |
| loss | causes of energy _____ in food chains: material not consumed or material not assimilated, heat loss through cell respiration |
| respiration | causes of energy loss in food chains: material not consumed or material not assimilated, heat loss through cell ________ |
| consumed | causes of energy loss in food chains: material not ________ or material not assimilated, heat loss through cell respiration |
| heat | causes of energy loss in food chains: material not consumed or material not assimilated, ____ loss through cell respiration |
| efficient | when energy transformations take place, the process is commonly only 10 - 20% _______ |
| transformations | when energy ______ take place, the process is commonly only 10 - 20% efficient |
| energy pyramid | shows the energy flow from one trophic level to the next in a community |
| energy per unit area per unit time | units of pyramids of energy |
| energy | "________ can enter and leave an ecosytem, but nutrients must be recycled" |
| ecosytem | "energy can enter and leave an ________, but nutrients must be recycled" |
| recycled | "energy can enter and leave an ecosytem, but nutrients must be _________" |
| nutrients | "energy can enter and leave an ecosytem, but ________ must be recycled" |