Tag Archives: food webs

IGCSE Bio Topic 19 – Organisms and their Environment

For self-assessment questions, with exercises and discussions, just click on the correct topic at Biology GCSE & IGCSE Question Bank. A powerpoint can be downloaded from the same site here. The s-cool revision site lets you revise the topic, summarizes the topic & tests you on it. Skoool gives you a lesson, including progress questions, for each Biology topic but you’ll need sound on for it. And both these sites –  GCSE Bitesize & GCSE Bitesize – have revision pages (that take you through the topic), a test and an activity. 

Topic 19 revision notes in downloadable word format; to be completed.

GCSE Bitesize covers Living Things in their Environment in 16m 44s.

This powerpoint covers a lot of Topic 19, as well as some of Topic 21:

Igcse biology edexcel 4.1 4.17 from Marcos Rodriguez

How wolves change rivers (a nice intro to Ecology):

19.1 Energy Flow and..

19.2 Food chains, food webs & trophic levels

What is an ecosystem? video from The Virtual School:

What is a trophic level? video from The Virtual School:

Mr W sings Food Chains.

Science Bank 10 (Energy Cycles in Nature): Part 1 – Energy transfer in nature – food chains & energy flow through them (to 5m 25s); Part 2 – the Carbon cycle (to 10m 55s):

19.3 Nutrient Cycles

A short (2m 26s) vid from Clipbank – Recycling Nutrients & Dr Yan’s Rotting Food time lapse from Bang Goes the Theory (1m14s). What happens to your body after you die? – Instant Egghead video (2m 10s).

A lesson on the Carbon Cycle from Mr Dare:

The Carbon Cycle: Carbon Cycle Video – Lesson Starter (3m), Carbon Cycle cartoon by Sofia (Climate Champion, 2006) & GCSE Bitesize – The Carbon Cycle (2m 41s).

B9 Energy Flow in Ecosystems (Combined Science)

For self-assessment questions, with exercises and discussions, just click on the correct topic at Biology GCSE & IGCSE Question Bank. A powerpoint can be downloaded from the same site here. The s-cool revision site lets you revise the topic, summarizes the topic & tests you on it. Skoool gives you a lesson, including progress questions, for each Biology topic but you’ll need sound on for it. And both these sites –  GCSE Bitesize & GCSE Bitesize – have revision pages (that take you through the topic), a test and an activity. 

Here are some key terms and definitions: Key Terms B10

GCSE Bitesize covers Living Things in their Environment in 16m 44s.

ECOLOGY (food chains, food webs & trophic levels):

What is an ecosystem? video from The Virtual School:

What is a trophic level? video from The Virtual School:

Mr W sings Food Chains.

ENERGY TRANSFER:

Science Bank 10 (Energy Cycles in Nature): Part 1 – Energy transfer in nature – food chains & energy flow through them (to 5m 25s); Part 2 – the Carbon cycle (to 10m 55s):

NUTRIENT CYCLES:

A short (2m 26s) vid from Clipbank – Recycling Nutrients & Dr Yan’s Rotting Food time lapse from Bang Goes the Theory (1m14s). What happens to your body after you die? – Instant Egghead video (2m 10s).

The Carbon Cycle: Carbon Cycle Video – Lesson Starter (3m), Carbon Cycle cartoon by Sofia (Climate Champion, 2006) & GCSE Bitesize – The Carbon Cycle (2m 41s). Finally, Mr W sings ‘7 ways to reduce carbon’:

How wolves change rivers (a nice intro to Ecology):

8D Ecological Relationships

Scientific Eye – Energy for Life – a 19m 9s video:

KS3 Bitesize foundation level – Living Things in their Environment – a video covering Habitats, Adaptation, Seasonal & Daily adaptations, Food Chains & Webs & Factors affecting Populations.

From the top of the food chain down: Rewilding our world – George Monbiot (a TED-Ed lesson):

7C Environment & Feeding Relationships

A 19m 16s video on Food Chains from Scientific Eye:

Want2TlkScience? – Food Chains & Food Webs a 6m 14s video; Science in Action – Food Webs & Chains – an 18m 20s video; Scientific Eye – Variety & Survival (20m).

KS3 Bitesize foundation level – Living Things in their Environment – a video covering Habitats, Adaptation, Seasonal & Daily adaptations, Food Chains & Webs & Factors affecting Populations.

Scientific Eye – Habitat & Population (19m).

What happens to your body after you die? – Instant Egghead video (2m 10s).

WOODLICE & CHOICE CHAMBERS:

Information on Investigating animal behaviour on KS3 Bitesize.

Predators & prey – Lion King ‘Threat to our Lives‘ song.

4.1 Species, Communities & Ecosystems

BioKnowledgy presentation on 4.1 Species, communities and ecosystems from Chris Paine

4-1 Species Comms Ecos notes to complete (created by Mrs Green).

A 9m video lesson on this sub-topic from Dan Rott videos:

In Crash Course Biology #40 – Ecology: Rules for Living on Earth, Hank introduces us to ecology.

CHI-SQUARED TEST:

Thank you Mr Andersen. And here is a worked Chi-squared example in 9m 30s.

The Chi-Squared Test from Stephen Taylor. And thank you Mr Taylor.

Key terms as flashcards from Quizlet (you also can test yourself in a number of ways):

PRESCRIBED PRACTICAL 5 – Mesocosms

Setting up sealed mesocosms to try to establish sustainability

Mesocosms – notes from BioNinja