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Ecology 6.3 and 6.4
Today's lesson
You will need a paper and pencil!
Review the water and carbon cycle
Discuss the pyramid of numbers and biomass
Start on your HW
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Slide 1:
Slide
Biologie
Middelbare school
havo
Leerjaar 2
This lesson contains
18 slides
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interactive quizzes
,
text slides
and
1 video
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Items in this lesson
Today's lesson
You will need a paper and pencil!
Review the water and carbon cycle
Discuss the pyramid of numbers and biomass
Start on your HW
Slide 1 - Slide
To Do:
Draw a picture of the water cycle.
Use the words: Evaporation, condensation, precipitation,
infiltration and evapotranspiration
Slide 2 - Slide
Slide 3 - Slide
Carbon Cycle
Before we begin...let's review 2 important processes.
1. Cellular respiration
2. Photosynthesis
Slide 4 - Slide
recall cell respiration
A
carbon dioxide + water -> glucose + oxygen
B
glucose + oxygen -> carbon dioxide + water
Slide 5 - Quiz
Carbon Cycle
Let's review
Makes notes from whiteboard
Slide 6 - Slide
Slide 7 - Video
6,4 Ecological pyramids
Simplify!
A food web is too complicated to study in detail
Break it down into producers, consumers, and so forth
See a food chain graphically to better understand relationships between organisms.
Slide 8 - Slide
Slide 9 - Slide
Pyramid of numbers:
The amount of individual organisms in the community reflected in a pyramid.
Each trophic level of a food chain is represented with a bar.
The amount of individuals in each trophic level is represented by the size of the bar.
Slide 10 - Slide
Slide 11 - Slide
Slide 12 - Slide
Pyramid of biomass:
The total biomass of all organisms in the community reflected in a pyramid.
The total biomass of each trophic level of a food chain is represented with a bar.
The amount organisms in each trophic level is multiplied by the mass of each individual to get the biomass.
Slide 13 - Slide
Slide 14 - Slide
This is a pyramid of ...
A
numbers
B
biomass
C
it is not a pyramid
D
it can be both a pyramid of numbers and of biomass
Slide 15 - Quiz
What does the pyramid of biomass show?
A
The biomass of one animal
B
The biomass in a link in the food chain
C
The number of organisms in a link in the food chain
Slide 16 - Quiz
a pyramid of numbers has always the shape of a pyramid
A
correct
B
incorrect
Slide 17 - Quiz
What did we learn?
1. The water cycle
2. The carbon cycle
3. Pyramid of numbers
4. Pyramid of biomass
To Do:
Read 6,3 and Do Qs 11 to 14
Read 6,4 and Do Qs 15 and 16
Slide 18 - Slide
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