1. Ecosystems

2. What is a system? It is a collection of elements that interact with each other over a period of time to function as a whole. Think-Pair-Share With your group, name as many systems as you possibly can.

3. Types of Systems Doughnut shop Rainforest Solar System Sound System Photosynthesis Game System School System Government Body System TV Life Cycle Farming Water Cycle Company GPS Atoms Electricity Ecosystems Watch Cell phone Clock Car

4. What is an ecosystem? Ecosystem- biotic (living) and abiotic (nonliving) interacting together in the environment. Abiotic factors include: Temperature Water Sunlight Soil Atmosphere There are many types of ecosystems on Earth, including forests, deserts, grasslands, rivers, beaches, and coral reefs There are two main types of ecosystems: – Terrestrial (land) – Aquatic (water)

5. What are ecosystems made of? Producers (can make its own food) Consumers (can not make its own food) – Herbivore: plant eaters – Carnivores: meat eaters – Omnivores: plant and meat eaters – Decomposers: breaks down dead organisms

6. Every ecosystem is made of: Population Population is all the organisms of the same species that live in the same area at the same time. Community Community is all the populations living in the same area at the same time.

7. Think-Pair-Share With the people at your table, you are to sort the cards the organisms into the correct consumable group. Please raise your hand when your group is finished

8. Transferring Energy Not only can energy be converted (changed) from one form to another, it can also be transferred from one organism to another. The transfer of energy takes place in an ecosystem when one organism eats another. Models that are used to describe these energy transfers are called: – Energy Pyramid – Food Webs

9. Food Webs Show the relationship that organisms share within a food chain. The arrows pointing the organisms show that it is consumed (eaten) by that organism.

12. Energy Pyramid An energy pyramid shows how much energy is available to organisms at each level of a food web. Some energy is used up by the organisms at each level. Resulting to less and less energy available at each level.

17. Biomes Ecosystems that have similar climates and contain similar plants are grouped into biomes. Taiga Tundra Desert Tropical Rainforest Grassland Temperate/ Deciduous Forest Freshwater Salt Water Estuaries

18. Taiga Tundra

19. Desert Tropical Rainforest

20. Grassland Deciduous (Temperate) Forest

21. Freshwater Salt Water

22. Estuaries Is a mixture of freshwater and saltwater.

23. Plant Adaptation

24. All living things respond, or react, to their environment. No organism can survive if it can’t respond to major changes in its environment. A plant doesn’t respond to everything but it does respond to certain stimulus such as: – Light – Heat – Gravity

25. Tropism Plants grow, reproduce and shift their position of their roots, stems, and leaves in response to environmental conditions such as gravity, sunlight, temperature and day length. Plants turning or bending movement toward or away from the external stimulus such as light, heat, or gravity If positive tropism, plant grows towards stimulus. If negative, the plant grows away from the stimulus

26. Tropisms Hydrotropism: Roots grow toward the water Geotropism: A root grows down Phototropism: Leaves turn toward the light

27. Phototropism

28. Gravitropism Gravitropism is an adaptation that makes sure a plant’s roots grow down into the soil and the stems grow up. If the plants did not respond to stimulus of gravity, they would not be able to grow from seeds.

29. Dormancy and Tropism

30. Dormancy Period of inactivity in a mature seed prior to germination Seed remains dormant until conditions are favorable for growth and development of the new plant