Ecosystems and Biomes

POD # 19
Where did your dinner come from?
Across the top of a sheet of paper, list the
different types of foods you ate for dinner
last night.
Under each item, write the name of the plant,
animal, or other organism that was the
source of that food. Some foods have more
than one source.
Ecosystems and Biomes
Ecosystems and Biomes
Three energy roles?
Ecosystems and Biomes
2. Producers?
3. Consumers and
Ecosystems and Biomes
4. What’s the difference?
 Herbivores eat only plants
 Carnivores eat only animals
 Omnivores eat both plants
and animals
 Scavengers feed on the
bodies of dead organisms
POD # 20 Food Web and Food Chain
What is the difference between a food web
and a food chain?
What are the 3 energy roles organisms have
in an ecosystem?
Create a food chain that goes to a second
level consumer.
Ecosystems and Biomes
5. Food chain?
 Movement of energy
through an ecosystem
 Begins with producers
 Food chain is specific
Ecosystems and Biomes
6. Diagram pgs 712-713
7. Food web:
 Movement of energy
through an ecosystem
 Many overlapping food
Bill Nye the Science Guy - "It's The Food Web"
- YouTube
Ecosystems and Biomes
8. Energy Pyramid?
It shows how energy
decreases at higher
levels of a food web
Ecosystems and Biomes
9. Eating the Sun?
 Producers (autotrophs)
convert the sun’s energy
 You either eat the
 Or you eat the animals that
eat the producers
Home Work
Complete the Energy- Role walk activity on
page 715. List 20 producers, consumers, and
decomposers that you see. Create a list of
the organisms and their energy roles. For
each consumer, try to classify it further
according to what it eats and its level. Then
draw a energy pyramid for at least one food
chain. This is a QUIZ grade!!!
POD #21 Water Cycle
What are the three forms of water?
What does evaporation mean, give an
What is the difference in condensation and
What is groundwater?
The suffix –ion means action or process,
explain why that would be important with
the water cycle. (look at key words)
10. The Water Cycle?
Evaporation: water
changes to water vapor
Condensation: water
vapor rises, cools, and
turns back to liquid
10. The Water Cycle?
The water vapor droplets
grow larger and larger
until they fall back to
Water molecule story…
Glacier, stream, ocean, cloud, stream, animal,
cloud, glacier, ocean
 “I was a lonely water molecule frozen in a
glacier on top of a mountain. When the spring
came and the ice thawed, I melted into a
stream. Down the mountain, the stream
roared going over large boulders. After the
long journey I reached the ocean.”
POD # 22 Energy flow review
1. What organisms only eat plants?
a. producers
b. consumers c. decomposers d. herbivores
2. What organisms get their energy by releasing chemicals onto
another organism and then soaking it into their bodies?
a. producers
b. consumers c. decomposers d. herbivores
3.What organisms are able to produce their food?
a. producers
b. consumers c. decomposers d. herbivores
4. What organisms must take in other organisms to get energy?
a. producers b. consumers c. decomposers d. herbivores
5.What organisms eat both plants and other animals?
a. producers
b. carnivores c. omnivores d. herbivores
6.Where is the largest amount of energy found on an energy pyramid?
a. top b. middle
c. bottom
d. each level is the same
Ecosystems and Biomes
11. Forest fires?
 During fires, lots of CO2 are
released into the air
 Fire leaves fewer trees to
absorb the CO2
 Too much CO2 warms the
Ecosystems and Biomes
12. How humans affect
 Burning fuel and clearing
forested land raises CO2
 Lowers oxygen levels in
the air
Ecosystems and Biomes
13. How does nitrogen get
 Bacteria release nitrogen
into the air
 Decomposers break down
wastes and remains
returning them to the soil
Ecosystems and Biomes
14. Nitrogen-fixing bacteria?
Live in nodules on the roots of
15. Biogeography?
The study of where organisms
Ecosystems and Biomes
16. Continental Drift?
 Millions of years ago, the
continents drifted apart
 The continents drifted
based on tectonic plates
Ecosystems and Biomes
17. Organism dispersal?
Wind, water, or other living things,
including humans
18. Limits to dispersal?
 Physical barriers (mountains)
 Competition
 Climate
Ecosystems and Biomes
19. Mountain climate
 At the base it is warm
and dry
 At the top it is cold and
Ecosystems and Biomes
20. Biomes?
 A group of land ecosystems
with similar climates and
 Climate, temperature, and
Ecosystems and Biomes
21. Map on page 729?
Along the equator
22. Giant Redwood trees
 Northwest coast of the U.S.
 Temperate rain forests
Ecosystems and Biomes
23. Canopy and Understory?
 Canopy is the leafy roof of
tall trees
Ecosystems and Biomes
23. Canopy and Understory?
The understory is the second
layer of shorter trees and
vines under the canopy
Ecosystems and Biomes
24. Desert climate conditions?
Usually hot/dry during the day
Cooler at night
Receiving less than 25 cm of rain
per year
25. Savannas vs. Prairies?
A grassland that receives more rain
than a desert, but not enough to
grow trees
25. Savannas vs. Prairies?
A grassland that receives more rain
than prairies with scattered
shrubs and small trees
Ecosystems and Biomes
26. Deciduous forests?
Receives less rainfall than rain
Temperatures vary by season
Trees shed their leaves
Ecosystems and Biomes
27. Map on page 734?
Cold winters
Coniferous trees
Found in on the
northern parts of
the northern
Ecosystems and Biomes
28. Permafrost?
Soil that is frozen all year
29. Arctic Tundra vs. Alpine Tundra
Arctic Tundra:
The extremely cold, dry part of
the arctic
29. Arctic Tundra vs. Alpine Tundra
Alpine Tundra:
The icy, windy tops of
Ecosystems and Biomes
30. Freshwater ecosystem?
Freshwater ecosystems include
streams, rivers, ponds, and
Marine ecosystems are saltwater and part of the ocean
Ecosystems and Biomes
31. Estuary:
Where fresh river water meets
the ocean’s salt water
Ecosystems and Biomes
31. Intertidal Zone:
 On the shore, between the
highest tide line and the
lowest tide line
 See page 738
Ecosystems and Biomes
31. Neritic Zone:
 The area from the low-tide
line out to the continental
 See page 738
Ecosystems and Biomes
31. Oceanic Zone:
 Out over the open ocean
 From the surface down as
deep as light penetrates
 See page 738
Ecosystems and Biomes
31. Benthic zone:
 Over open ocean
 From just below the surface
zone to the ocean floor
 No light penetrates
 See page 738

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