| A | B |
|---|
| A tick sucks blood from a dog. What is the host? | the dog |
| A tick sucks blood from a dog. What is the parasite? | the tick |
| When 2 organisms benefit from one another. | mutualism |
| the base of an energy pyramid in an ecosystem | producers |
| eat meats, fruits and vegetables | omnivores |
| part of the Earth where life exists | biosphere |
| source of energy for almost all living things | sunlight |
| organisms that use sunlight directly to make food | producers |
| organisms that eat producers to obtain energy | consumers |
| organisms that get energy by breaking down the remains of dead organisms | decomposers |
| what it eats, how it reproduces and where it lives | all part of a organism's niche |
| the amount of energy left from the previous level | 10 percent |
| organism that is eaten | prey |
| organism that eats the prey | predator |
| natural resoureces like water, food, shelter | limiting factors |
| maximum capacity of an organism in a particular environment | carrying capacity |
| When limiting factors are all used up, what happens? | population decreases |
| one organism benefits and the other is unaffected | commensalism |
| one organism benefits and the other is harmed | parasitism |
| long term change in 2 species because of close interaction | coevolution |
| environment in which an organism lives | habitat |
| an organism's habitat, food, predators | niche |
| animals that feed off the body of dead animals | scavengers |
| consumers that eat both plants and animals | omnivores |
| consumer that eats only plants | herbivore |
| consumer that eats only animals | carnivore |
| group of individuals of the same species that live together | population |
| all populations of different species that live and interact with one another | community |
| community and abiotic environment | ecosystem |
| living part (s) of environment | biotic |
| physical features of environment | abiotic |
