Water pollution

Farms pollute rivers by throwing...

Houses pollute rivers, like the Riachuelo, by throwing...

Eutrophication is caused by...

• Fertilizers reaching rivers

• Pesticides reaching rivers

• Toxic chemicals and heavy metals reaching rivers

Which is the correct option?

• Bioaccumulation is the accumulation of a chemical in the fatty tissue of an animal and Biomagnification is the increase in the concentration of a chemical the higher in a food chain.

• Biomagnification is the accumulation of a chemical in the fatty tissue of an animal and Bioaccumulation is the increase in the concentration of a chemical the higher in a food chain.

• Bioaccumulation and Biomagnification are synonyms.

What is happening at this stage?

One consequence of river pollution on people is...

One consequence of river pollution on the natural environment (plants and animals) is...