KS3 Ecosystems & Ecology

This section has a series of resources which focuses on food chains, webs and predator prey relationships of animals and plants with 6 topic lessons. The second PowerPoint is for a Tree and Leaf STEM identification project. It depends a lot on the trees around but we have a huge amount, so it was easy. You can edit and limit the outcomes but it’s great to do on a summer day.

1 Food Chains

2 Food Webs

3 Pyramids of Number and Biomass

4 Predator and Prey Adaptations

5 Predator and Prey Graphs

6 Extinct animals and conservation

7 Tree and Leaf Project

Interactive Quiz

GCSE Biology - Food Chains & Predator Prey Cycles

For ecosystems to function they need energy; and we can see how this energy moves through ecosystems with food chains. We also explore how the populations of predators and prey ...vary over time with predator prey cycles.Show More

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GCSE Biology - Food Chains & Predator Prey Cycles

For ecosystems to function they need energy; and we can see how this energy moves through ecosystems with food chains. We also explore how the populations of predators and prey ...vary over time with predator prey cycles.Show More

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Predation :Predator and Prey adaptations

An introduction to the concept of predation, feeding types, behavioural, structural and physiological adaptations in both predators and their prey. Includes camouflage and mimicry.

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De Vos Education videos aim to make content colourful and clear to understand. The videos are based on the CAPS syllabus in South Africa with some extensions and expansion into other syllabi around the world. For more information on us visit: https://www.devoseducation.wordpress.com

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Top 5 Animal Adaptations | BBC Earth

Presenting some of the most remarkable adaptations in the natural world from the BBC Archive.
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Predator prey relationships

This video looks at how a species' population fluctuates based on the interaction with another species in a predator-prey biotic relationship.

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Predator prey graph

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Competition, Predation, and Symbiosis | Biology | Ecology

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DVD Title
Community Interactions: Competition, Predation, and Symbiosis.

DVD Description
Our Competition, Predation and Symbiosis DVD first describes the concepts of community, coevolution and ecological niche before looking at how ...competition results from overlapping niches. The program then examines predator-prey relationships and the various adaptations such as camouflage, warning coloration, mimicry and chemical warfare that have evolved as a result of these relationships. Symbiotic relationships such as parasitism, commensalism, and mutualism are then explored. A discussion of primary and secondary succession concludes the program.Show More

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We need IMMEDIATE action to stop extinction crisis, David Attenborough - BBC

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Watch the BBC first on iPlayer 👉 https://bbc.in/iPlayer-Home With a million species at risk of extinction, Sir David Attenborough explores how this crisis ...of biodiversity has consequences for us all, threatening food and water security, undermining our ability to control our climate and even putting us at greater risk of pandemic diseases.

Extinction is now happening up to 100 times faster than the natural evolutionary rate, but the issue is about more than the loss of individual species. Everything in the natural world is connected in networks that support the whole of life on earth, including us, and we are losing many of the benefits that nature provides to us. The loss of insects is threatening the pollination of crops, while the loss of biodiversity in the soil also threatens plants growth. Plants underpin many of the things that we need, and yet one in four is now threatened with extinction.

Last year, a UN report identified the key drivers of biodiversity loss, including overfishing, climate change and pollution. But the single biggest driver of biodiversity loss is the destruction of natural habitats. Seventy-five per cent of Earth's land surface (where not covered by ice) has been changed by humans, much of it for agriculture, and as consumers we may unwittingly be contributing towards the loss of species through what we buy in the supermarket.

Our destructive relationship with the natural world isn’t just putting the ecosystems that we rely on at risk. Human activities like the trade in animals and the destruction of habitats drive the emergence of diseases. Disease ecologists believe that if we continue on this pathway, this year’s pandemic will not be a one-off event.

Extinction: The Facts | BBC

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The last living members of an extinct species - Jan Stejskal

Dig into how scientists are attempting to revive the functionally extinct northern white rhino through artificial reproduction.

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In the savannahs of Kenya, two female northern white rhinos, Nájin and Fatu, munch ...contentedly on grass. They are the last two known northern white rhinos left on Earth. Their species is functionally extinct— without a male, they can’t reproduce. And yet, there’s still hope to revive the northern white rhino. How can that be? Jan Stejskal dives into the science of reviving a dying species.

Lesson by Jan Stejskal, directed by Denis Chapon.

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