1. 4.21
Have your biome of the day worksheet ready to go.

2. BIOME OF
THE DAY
sound 1
Sound 2

3. Today’s biome is ……
the tropical savanna

4. Abiotic Factors warm all year seasonal rainfall
frequent fires caused by lightning

5. Plants in the tropical savannah
Bermuda Grass
Senegal Gum Acacia
Elephant Grass
Umbrella Thorn Acacia

6. Animals
Lions
Elephants
Giraffes
Zebras
Warthog
Hyena

7. Human impact
Overgrazing
Foreign Species

8. Energy Flow in an Ecosystem
What are produces and consumers?
What is a food chain and food web?
How does energy pass in a food web?
What is Biological magnification?

9. Energy Flow Energy in an ecosystem originally comes from the sun
Energy flows through Ecosystems from producers to consumers
Producers (make food)
Consumers (use food by eating producers or other consumers)

10. Producers
Sunlight is the main source of energy for most life on earth.
Producers contain chlorophyll & can use energy directly from the sun

11. Autotrophs
An Autotroph is any organism that can produce its own food supply!
Autotrophs are also called Producers
Plants, algae, some protists, & some bacteria are examples

12. Niche of a Producer
Captures energy and transforms it into organic, stored energy for the use of living organisms.
May be photoautotrophs using light energy (e.g. plants)
May be chemoautotrophs using chemical energy (e.g. cyanobacteria)

13. Photoautotroph
Producer That Captures Energy from the sun by: Photosynthesis
Adds Oxygen to the atmosphere
Removes Carbon Dioxide from the Atmosphere

14. Habitat of Photoautotrophs
On Land
Plants
In The Sea
Algae
Tidal Flats & Salt Marshes
Cyanobacteria

15. Called a Black smoker (thermal vent)
Chemoautotrophs
Capture energy from the bonds of inorganic molecules such as Hydrogen Sulfide
Process is called Chemosynthesis
Often occurs in deep sea vents or gut of animals
discovery
Called a Black smoker (thermal vent)

16. Consumers
Heterotrophs eat other organisms to obtain energy. (e.g. animals)
Herbivores
Eat Only Plants
Carnivores
Eat Only Other Animals

17. Consumers
Heterotrophs eat other organisms to obtain energy. (e.g. animals)
Herbivores
Eat Only Plants
Carnivores
Eat Only Other Animals
Zebra video

18. Consumers Omnivores (Humans):Eat Plants & Animals
Detritivores (Scavengers):Feed On Dead Plant & Animal Remains
Decomposers: Fungi & Bacteria

19. Feeding Relationships
Energy flows through an ecosystem in one direction
from producers to various levels of consumers

20. Feeding Relationships
Food Chain
Simple Energy path through an ecosystem
Food Web
More realistic path through an ecosystem made of many food chains

21. Food Chain Producer (trapped sunlight & stored food)
3rd Order consumer
2nd Order Consumer
1st order Consumer
4th Order Consumer
Producer (trapped sunlight & stored food)

22. Name the Producer, Consumers & Decomposers in this food chain:
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23. Food Web

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25. Each Level In A Food Chain or Food Web is a Trophic Level.
Trophic Levels
Each Level In A Food Chain or Food Web is a Trophic Level.
Producers
Always The First Trophic Level
How Energy Enters The System
Herbivores
Second Trophic Level

26. Trophic Levels Carnivores/Omnivores
Make Up The Remaining Trophic Levels

27. 10%
Each level depends on the one below it for energy. Each level only passes on 10%. The rest is used or given off as heat.

28. Ecological Pyramids
Graphic Representations Of The Relative Amounts of Energy or Matter At Each Trophic Level May be: Energy Pyramid Biomass Pyramid Pyramid of Numbers

29. Energy Pyramid

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Biomass Pyramid
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Pyramid of Numbers
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32. Biological Magnification
process in which toxic substances become more harmful at each higher trophic level in a food chain
Ex: DDT

33. Food Web Project When you are done, finish and turn in your foldable

34. TOTD
What is the ultimate source of all energy on earth?