Ecology 6.2 feeding relationships and cycles

Ecology 6.2 - Feeding relationships and cycles
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This lesson contains 32 slides, with interactive quizzes, text slides and 4 videos.

time-iconLesson duration is: 45 min

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Ecology 6.2 - Feeding relationships and cycles
Repeating! 

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Today

6.2 Feeding relationships and cycles
What is a food web?
What is a food chain?
Feeding relations
Water cycle
Carbon cycle

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Slide 3 - Video

What examples are given of how wolves change the ecosystem?

Slide 4 - Open question

How do wolves change rivers?

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Slide 10 - Video

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Assign a food web
Sloths

The sloth from Brazil hangs upside down in the trees of the rainforest for most of its life. It feeds on leaves and young buds. Once a week he descends to relieve himself in a hole. Among other things, dung beetles = mestkevers are attracted to this. Microscopic algae live in the sloth's coat, which gives it its green camouflage color. Between the hairs there are also small insects that live on the algae and hair lice that use the hair as food.
Bacteria and yeast live on the food waste in his intestines.

Use the bold organisms to construct a food web, take a picture and put it on the next slide

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upload your food chain here

Slide 20 - Open question

WHICH OF THESE TERMS CONTAIN BOTH BIOTIC AND ABIOTIC FACTORS.
A
COMMUNITY
B
POPULATION
C
ENVIRONMENT
D
ECOSYSTEM

Slide 21 - Quiz

How many different species does the rabbit eat according to this food web?
A
1
B
2
C
3
D
4

Slide 22 - Quiz

Why is it always producers that are at the start of a food chain / food web?

Slide 23 - Open question

Why are decomposers important?

Slide 24 - Open question

6.2 Cycles
In an ecosystem, every substance goes through it's own cycle.
Water cycle
Carbon cycle
Nitrogen cycle

Study figure 12 and 13 explain how water and carbon are moving through our biosphere

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Evapotranspiration

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Slide 29 - Video

The carbon cycle

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Homework
- BS 6.2 make assignment 1 to 3 + 5 to 10
Read/scan BS 6.3 
- Make assignment 1 to 3

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