What is one of the main effects of chemical residues released by plastic in the oceans?, They increase oxygen in the water, They improve plankton growth, They can enter the marine food chain, They make water more drinkable, What can happen when sewage is not properly treated before being released into the environment?, It improves water quality, It causes contamination and the spread of diseases, It reduces the presence of bacteria, It makes the soil more fertile without negative effects, What is one of the main causes of animal species extinction?, Increase in forests, Decrease in global temperatures, Destruction of natural habitats, Improvement of natural resources, What is a negative effect of the excessive use of fertilizers in agricultural fields?, Reduction of water pollution, Immediate improvement of biodiversity, Improvement of soil quality, Excessive growth of algae in waterways, Why does pollution represent a threat to biodiversity?, It destroys ecosystems and alters natural balances, It improves the living conditions of animals, It has no effect on ecosystems, It increases the number of living species.

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