Starter Activity: On a show me board
Put the following factors under the
appropriate headings:
Biotic
Abiotic
pH
New species
Temperature
Predator
Bacterial disease
Rainfall
Humidity
Biotic and Abiotic Factors
Learning Intention: Identify, describe and explain factors
that can affect biodiversity and the distribution of living
things.
Success Criteria:
• Identify non-living factors that can affect biodiversity.
• Identify living factors that can affect biodiversity.
• Explain the impact of biotic factors on biodiversity.
• Explain the impact of abiotic factors on biodiversity.
RECAP
What can affect Biodiversity?
The following things can affect levels of biodiversity:
• Abiotic factors
• Biotic factors
What do they mean to you?
Think  Pair  Share
Watch the following Glow video clips and add any
further information to your show me board:
Abiotic Factors
Biotic Factors
Ecosystem Key Words
Add the meaning, with examples, of biotic and abiotic
factors to your key word page
Key Word
Ecosystem
Habitat
Niche
Community
Species
Population
Abiotic factor
Biotic factor
Biodiversity
Meaning
Example
Grazing and Biodiversity
What is grazing and how might it affect
levels of biodiversity?
Grazing and Biodiversity
• Grazing is when a herbivore feeds on
plant material.
• Grazing is an example of an abiotic
factor affecting biodiversity.
• Different levels of grazing affect
biodiversity in different ways:
Levels of grazing and biodiversity
Think about the following:
Different levels of grazing can be
described by the intensity of
grazing. The impact of grazing on
biodiversity depends on how well
the different plant species can
re-grow and survive .”
In pairs discuss how low, medium or high
intensity grazing might affect the
survival of different plant species.
Grazing and Biodiversity
Level of grazing
Level of biodiversity
Low intensity
Low biodiversity
Medium intensity
High biodiversity
High intensity
Low biodiversity
Reason
Impact of predator and prey
on biodiversity
• Predation is when an animal hunts and
kills another animal to consume it for
energy.
• Predation is an example of an abiotic
factor affecting biodiversity.
Predator and Prey
How does the relationship between
predator and prey affect biodiversity?
Predator and Prey
Describe what is happening in this graph
Predator and Prey
• Sketch the graph below and describe
the relationship between the number of
predators and prey:
Abiotic factors affecting
biodiversity
• pH and temperature are examples of abiotic factors
that can affect biodiversity.
• In pairs discuss how and why these factors might
affect levels of biodiversity and note your answers on
a show me board:
Temp.
pH
Temperature
Abiotic factors affecting
biodiversity
• pH and temperature are examples of abiotic factors
that can affect biodiversity.
• pH can affect biodiversity by:
• Temperature can affect biodiversity by:
Biotic and Abiotic Factors
Learning Intention: Identify, describe and explain factors
that can affect biodiversity and the distribution of living
things.
Success Criteria:
• Identify non-living factors that can affect biodiversity.
• Identify living factors that can affect biodiversity.
• Explain the impact of biotic factors on biodiversity.
• Explain the impact of abiotic factors on biodiversity.
Biotic and Abiotic Factors
Learning Intention: Identify, describe and explain factors
that can affect biodiversity and the distribution of living
things.
Success Criteria:
• Identify non-living factors that can affect biodiversity.
• Identify living factors that can affect biodiversity.
• Explain the impact of biotic factors on biodiversity.
• Explain the impact of abiotic factors on biodiversity.
Investigating Human Activity
1. Choose one example of how human activity can influence
biodiversity.
2. Find information from at least two different sources, say
what the sources are and why you chose them using the
following words: relevant, reliable or perspective.
3. Find some statistics about your chosen human activity:
present them in an appropriate way and process the data
e.g turn a table into a graph or perform a calculation on the
data.
4. Summarise your findings in 50 to 100 words, with a
conclusion which is backed up by quoting your data.
5. Present your investigation on A4 paper.