1. Mission Pledge: As part of HMS I will seek to create a positive learning environment in which all students will excel today, tomorrow, and forever. K-W-L:Energy

2. Mission Pledge: As part of HMS I will seek to create a positive learning environment in which all students will excel today, tomorrow, and forever. “Check Yourself” A _______ _______ is anything that restricts the number of individuals in a population. Carrying Capacity Limiting Capacity Carrying Factor Limiting Factor

3. Mission Pledge: As part of HMS I will seek to create a positive learning environment in which all students will excel today, tomorrow, and forever. “Check Yourself” ________ ________ is the largest number of individuals of one species that an ecosystem can support over time. Carrying Capacity Limiting Capacity Carrying Factor Limiting Factor

4. Mission Pledge: As part of HMS I will seek to create a positive learning environment in which all students will excel today, tomorrow, and forever. “Check Yourself” __________ use the Sun to make their own food. Conductors Players Consumers Producers

5. An ecosystem is all the organisms living in an area, as well as the nonliving parts of that environment. Ecosystems 1 1 Living Earth

6. A population is all organisms of the same species that live in an area at the same time. Populations 1 1 Living Earth For example, all the bison in a prairie ecosystem are one population.

7. A community is all the populations of all species living in an ecosystem. 1 1 Living Earth An arctic community might include populations of fish, seals that eat fish, and polar bears that hunt and eat seals. Populations

8. Each organism in an ecosystem needs a place to live. 1 1 Living Earth Habitat is the place in which an organism lives. An organism’s habitat provides the kinds of food and shelter, the temperature, and the amount of moisture the organism needs to survive. Habitats

9. In any ecosystem the availability of food, water, living space, mates, nesting sites, and other resources is often limited. Limiting Factors 2 2 Populations A limiting factor is anything that restricts the number of individuals in a population. Limiting factors include living and nonliving features of the ecosystem.

10. Carrying capacity is the largest number of individuals of one species that an ecosystem can support over time. Carrying Capacity 2 2 Populations If a population begins to exceed the environment’s carrying capacity, some individuals could die or be forced to move elsewhere. Click image to view movie.

11. Producers use the Sun to make their own food. Producers 3 3 Interactions Within Communities Most producers contain chlorophyll, a chemical that is required for photosynthesis.

12. Organisms that cannot make their own energy-rich molecules are called consumers. Consumers 3 3 Interactions Within Communities Consumers obtain energy by eating other organisms.

13. Many organisms live together and share resources in other ways. Symbiotic Relationships 3 3 Interactions Within Communities Symbiosis is any close relationship between species.

14. Mutualism 3 3 Interactions Within Communities Mutualism is a symbiotic relationship in which both species benefit.

15. Commensalisms is a symbiotic relationship in which one organism benefits and the other is not affected. 3 3 Interactions Within Communities Commensalism

16. Parasitism 3 3 Interactions Within Communities Parasitism is a symbiotic relationship in which one organism benefits but the other is harmed.

17. Predator and Prey 3 3 Interactions Within Communities Predators are consumers that capture and eat other consumers. Prey is the organism that is captured by the predator.

18. Food Chains A food chain is a way of showing how energy passes from one organism to another. Producers are always the first step in a food chain. Energy Flow 3 3 Consumers are always the second step in a food chain.

19. Food Chains Consumers that eat other consumers are the third and higher steps of food chains. Energy Flow 3 3

20. A food web is a model that shows all the possible food chains among the organisms in a community. Food Webs Energy Flow 3 3

21. An energy pyramid shows the amount of energy available at each feeding level in an ecosystem. Available Energy Energy Flow 3 3