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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
1 / 18
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Slide 1: Slide
BiologieMiddelbare schoolhavoLeerjaar 2

This lesson contains 18 slides, with interactive quizzes, text slides and 1 video.

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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