What can cause disruptions to food webs?
In this lesson we will learn about the main factors that are affecting food webs and changing our planet's ecosystems.
What can cause disruptions to food webs?
In this lesson we will learn about the main factors that are affecting food webs and changing our planet's ecosystems.
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Lesson details
Key learning points
- Describe how removing one organism can have knock-on effects
- Disruptions to food webs e.g. pesticides, deforestation, hunting
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4 Questions
Q1.
In a food web, what do the arrows represent?
direction of force
favourite animals
Q2.
Is a brown trout a consumer or a producer?
producer
Q3.
Is pond weed a producer or a consumer?
consumer
Q4.
If a ladybird gets its energy by eating aphids and small insects, does this make it a consumer or producer?
producer
4 Questions
Q1.
Which of these is NOT a cause of disruption to food webs?
Drought
Pesticides
Q2.
Deforestation can affect food webs because...
It can be noisy
It is good for humans
Q3.
Why can pesticides affect a food web?
because they make things grow better
Q4.
What is global warming?
A gradual decrease in the overall temperature of the Earth
The natural seasons of the Earth