Pollution EffectsThe main pollutant types and the mechanism of harm for each.BiologyEutrophication, from fertiliser to fish kill.1Nutrient runoffNitrate and phosphate enter the water.2Algal bloomRapid growth at the surface.3Light blockedSubmerged plants die.4Decomposers proliferateFeeding on the dead material.5Oxygen depletedAerobic decomposition consumes dissolved oxygen.6Fish and invertebrates dieThe water becomes anoxic.OTHER POLLUTANTSBioaccumulation — builds up in an organismBiomagnification — concentrates up the food chainAcid rain — leaches nutrients, mobilises aluminiumMicroplastics — ingestion and transportBiomagnification is why top predators carry the highest pollutantburdens: DDT and mercury both concentrate this way.Pollution Effectslearnposters.com
Pollution Effects — printable life science wall chart from LearnPosters. Free vector PDF, US Letter and A4.

Pollution Effects, step by step

Eutrophication, from fertiliser to fish kill.

  1. Nutrient runoffNitrate and phosphate enter the water.
  2. Algal bloomRapid growth at the surface.
  3. Light blockedSubmerged plants die.
  4. Decomposers proliferateFeeding on the dead material.
  5. Oxygen depletedAerobic decomposition consumes dissolved oxygen.
  6. Fish and invertebrates dieThe water becomes anoxic.

Other pollutants

  • Bioaccumulation — builds up in an organism
  • Biomagnification — concentrates up the food chain
  • Acid rain — leaches nutrients, mobilises aluminium
  • Microplastics — ingestion and transport

Biomagnification is why top predators carry the highest pollutant burdens: DDT and mercury both concentrate this way.

Questions about the Pollution Effects poster

What’s on the Pollution Effects poster?
6 numbered steps, with a full worked run-through. Eutrophication, from fertiliser to fish kill. Nutrient runoff — Nitrate and phosphate enter the water.; Algal bloom — Rapid growth at the surface.; Light blocked — Submerged plants die.; Decomposers proliferate — Feeding on the dead material.; Oxygen depleted — Aerobic decomposition consumes dissolved oxygen.; Fish and invertebrates die — The water becomes anoxic.. Biomagnification is why top predators carry the highest pollutant burdens: DDT and mercury both concentrate this way.
Who is the Pollution Effects poster for?
Pollution Effects belongs to the Biology section rather than to a school year, because life science is not something one grade owns. Anyone learning ecology can pin it up — a beginner, a student mid-course, or someone revising years later.
When should you use the Pollution Effects poster?
Eutrophication is the classic worked example. Every step follows from the last. A wall chart earns its place by being glanceable from where the work is happening, so Pollution Effects belongs on the wall where that life science work actually happens, within glancing distance, rather than filed away.
What other posters go with Pollution Effects?
Measuring Biodiversity, Carbon in Ecosystems and Climate & Ecosystems sit alongside Pollution Effects in the Biology section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Measuring BiodiversityCarbon in EcosystemsClimate & Ecosystems
Is the Pollution Effects poster free to download and print?
Yes. Pollution Effects downloads as a free PDF with no account, no email and no watermark, like everything else in the Biology section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the Pollution Effects poster print at?
Pollution Effects is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Pollution Effects loses nothing.Printing guide

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