| A | B |
| ecological pyramid | diagram thta shows the amount of energy or mass within each trophic level of a food chain |
| intraspecific competition | when ocmpetition exists between organisms of the same species it is called |
| interspecific competition | when competition exist between organisms of different species it is called |
| heterotroph | an organism that gets it senergy from eating other organisms is called a |
| ecology | the stud of relationships between organisms and their environment |
| herbivore | an organism that gets it senergy frome ating only plants is called this |
| ecosystem | all the living organisms in a particular loctaion, together with their nonliving environment |
| habitat | the area where an organism lives is called |
| food chain | diagram that shows feeding relationships and energy |
| food web | a group of food chains that shows multiple feeding relationships |
| active transport | transport across a membrane that requires energy |
| passive transport | transport across a membran that does not require energy |