| A | B |
|---|
| Organism | a living thing that obtains food, water, shelter, and other things it needs to live, grow, and reproduce from its environment |
| Habitat | the place where a particular population of species lives |
| Biotic factors | the living parts of an organism’s habitat |
| Abiotic factors | the nonliving parts of an organism’s habitat. They include water, sunlight, oxygen, temperature, and soil |
| Producers | organisms that produce their own food |
| Consumers | organisms that obtain energy by consuming plants and/or other organisms |
| Herbivores | plant eaters |
| Carnivores | meat eaters |
| Omnivores | animals that are both carnivores and herbivores |
| Food chain | path of energy through the different levels of an ecosystem |
| Species | a group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce. |
| Population | all the members of one species in a particular area. |
| Community | all the different populations that live together in an area. |
| Ecosystems | The community of organisms that live in a particular area, along with their nonliving surroundings. |
| Ecology | The study of how living things interact with each other and with their environment. |
| Natural selection | organisms whose unique characteristics are best suited for their environment tend to survive and produce offspring. |
| Adaptations | the behaviors and physical characteristics that allow organisms to live successfully in their environments. |
| Niche | The role of an organism, or how it makes its living that includes the type of food the organism eats, how it obtains this food, and which other organisms use the organism as food, when and how the organism reproduces and the physical conditions it requires to survive. |
| Decomposers | break down wastes and dead organisms and return the raw materials to the ecosystem. |
| Food webs | consistes of many overlapping food chains in an ecosystem. |
| Energy pyramid | shows the amount of energy that moves from one feeding level to another in a food web. |
| Which level has the most energy available? | producer level |
| What happens as you move up the energy pyramid? | Each level has less energy available than the level below. |
| Which 2 of the substances are necessary for life? | carbon and oxygen |
| Photosynthesis | water+sunlight+carbon dioxide are taken in by plants to make their own food (energy)and release oxygen |
| What are the 5 abiotic factors? | soil, temperature, sunlight, oxygen, and water |
| What is the oxygen cycle? | Producers release oxygen as a result of photosynthesis and most organisms take in oxygen from the air and use it to carry out their life processes. Oxygen is cycled through the ecosystem. |
