1. Feeding Relationships in a Community

2. Food Chain Food Web Energy Pyramids Cycles of Matter

3. Food Chains
A food chain shows the transfer of energy through a community.
Example: Grass  Grasshopper  Robin  Bacteria

4. Each food chain has at least one…
Producer
Consumer
Decomposer

5. Producers
Organisms in a community that make their own food through photosynthesis.
Also known as photosynthetic organisms
Examples:
Green Plants
Algae

6. Consumers Organisms in the community that eat other organisms.
There are several types of consumers:
Herbivores
Carnivores
Omnivores
Scavengers
Decomposers

7. Herbivores Consumers that eat only plants. Examples:
Also called primary consumers
Examples:
Deer
Rabbits
Grasshoppers
Squirrels

8. Carnivore Consumers whose diet consist mostly of other animals.
Also called secondary consumers
Examples:
Coyote
Owls
Hawks

9. Omnivore Organism who eat both plants and animals. Examples: Raccoon
Fox
Humans

10. Scavengers
Eats something that is already dead
Example:
vulture

11. Decomposers
Organisms that get that get their food from breaking down dead matter.
Decomposers return nutrients (raw materials) back to the soil.
Examples:
Fungus (mushrooms)
Bacteria

12. Check for Understanding:
Use the information in the table on the next slide and identify each animal as a carnivore, omnivore or an herbivore.
Elephant: _________________________
Tiger: ____________________________
Lynx: ____________________________
Coyote: __________________________

13. Animal
Length of Life in the wild
Diet
Range
Elephant
About 70 years
Roots, leaves, and grasses
Asia, Africa
Tiger
About 20 years
Antelope and other animals
Asia
Lynx
About 10 years
Deer, rodents and other small animals
Europe, Asia, North America
Coyote
5 to 6 years
Grasses, grains, and small animals
North America

14. Check for Understanding:
Use the information in the table on the next slide and identify each animal as a carnivore, omnivore or an herbivore.
Elephant: Herbivore
Tiger: Carnivore
Lynx: Carnivore
Coyote: Omnivore

15. Food Web
Shows the many food relationships in a community.

16. Energy Pyramid
This is a model that shows the amount of energy available at each feeding level in an ecosystem.
The producers at the bottom of the pyramid have the most energy AND largest number of organisms. Animals gain only a small amount of energy from the food they eat.

17. Check for Understanding:
Look at the food web.
Suppose a disease caused the population of mice to decrease. What other organisms would be affected by this change? _____________________
How might their populations change? __________________________________________________

18. Check for Understanding:
Look at the food web.
Suppose a disease caused the population of mice to decrease. What other organisms would be affected by this change? Snake, Insects, Shrew
How might their populations change?

19. Which section of the pyramid has the most energy
Which section of the pyramid has the most energy? _____________ Which section of the pyramid has the least energy? _____________

20. Which section of the pyramid has the most energy
Which section of the pyramid has the most energy? The bottom Which section of the pyramid has the least energy? The Top

21. Place the organism in the food chain on the energy pyramid.

22. Place the organism in the food chain on the energy pyramid.
Owl
Mouse
Insects
Plants

23. Cycling Matter Through an Ecosystem
Water Cycle
Nitrogen Cycle
Carbon Cycle

24. Water Cycle Cycle where water evaporates
Travels into the air and becomes part of a cloud (condensation)
Falls down to earth as precipitation
Then evaporates again.
This repeats again and again in a never-ending cycle.

26. Nitrogen Cycle –Click this link to watch a video. https://www. youtube

27. Carbon Cycle
Analyze the diagram on the next slide and answer the questions below.
List one way that Carbon Dioxide (CO2) is released into the atmosphere._______________________
Which organism uses the Carbon Dioxide? _________
Fossil fuels contain Carbon, how are they formed? ___________________________________________

28. Carbon Cycle

29. Carbon Cycle
Analyze the diagram on the next slide and answer the questions below.
List one way that Carbon Dioxide (CO2) is released into the atmosphere. Plant & Animal Respiration & Factory Emissions.
Which organism uses the Carbon Dioxide? Plants
Fossil fuels contain Carbon, how are they formed? Decaying organisms and waste products.