Science Ecosystems & Habitatsusually ages 12–13

Toxins Building Up in Food Chains

Explain how organisms affect and are affected by their environment, including the bioaccumulation of toxic materials (e.g. pesticides, heavy metals) through food chains

How to tell they’ve got it

Tick these off as you see them — no test required.

Defines bioaccumulation and explains why toxins increase in concentration higher up the food chain
Gives a real example of bioaccumulation (e.g. DDT in peregrine falcons, mercury in tuna)
Explains how organisms can change their habitat (e.g. earthworms aerating soil, beavers creating wetlands)
Discusses why top predators are most at risk from bioaccumulation

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Try this together

If your child heard that large fish like tuna can contain more mercury than small fish, could they explain why that is — even though the tuna didn’t encounter mercury directly?

Where this sits on the map

Stuck here? Check the skills it builds on first. Confident? Here’s what it unlocks.

Builds on

Food Webs & Interdependenceages 11–12Bioaccumulation occurs through food chains and webs — the feeding relationships must be understood first

Toxins Building Up in Food Chainsthis skill · ages 12–13

Unlocks

Nothing on the map depends on this yet.

solid = must come firstdashed = helps

Curriculum alignment

Candidate matches to official curriculum codes — machine-suggested, unreviewed (v0.1).

This skill sits beyond Year 6 in the Australian Curriculum, so no F–6 code is matched. It also sits beyond the NSW K–6 syllabuses. It also sits beyond Level 6 in the Victorian Curriculum.

Nearby on the map

Biodiversity & Resilienceages 12–14 Chromosomes, Genes & DNAages 12–13 Evidence for Evolutionages 12–14 Extinction & Rapid Changeages 12–14

All Ecosystems & Habitats skills →