Waste management.

https://www.revisely.com/gcse/biology/aqa/video/ndU

How is waste from humans polluting the water.

They produce a large amount of sewage, contains urine and faeces, sometimes untreated sewage in the uk accidentally released into rivers and sreams.

Rivers and streams can also be polluted with fertilisers from farms, both fertilisers and untreated sewage cause dissolved oxygen levels to fall, and this can kill aquatic organisms.

Sometimes toxic chemicals are released into rivers from factories and can kill animals in river.

Waste from human activity is reducing biodiversity in aquatic ecosystems.

How is waste from humans polluting the air

Burning coal in power stations can release acidic gases, and can cause acid rain.

Burning can also release smoke , air pollution like this can kill plants and animals, this will reduce biodiversity.

How can human waste pollute land.

Millions of tons of waste are dumped into landfills, landfills destroy habitats for plants and animals.

Toxic chemicals can also leach out of landfills and pollute the soil, in some chases these toxic chemicals are simply dumped directly onto the land.

What can we see from this

Human waste damages environment and reduces biodiversity.