Lluvia ácida

Rainwater is naturally slightly acidic due to carbon dioxide forming weak carbonic acid. Acid rain, however, is more acidic because of pollutants like sulfur and nitrogen oxides. This increased acidity can harm plants, animals, and erode buildings and rocks.

What causes all rainwater to be slightly acidic?

• Presence of sulfur in the air

• Dissolution of carbon dioxide in the air

• Pollution from factories

• High levels of nitrogen oxides

Which pollutants contribute to the increased acidity of acid rain?

• Sulfur and nitrogen oxides

• Carbon monoxide and methane

• Chlorofluorocarbons

• Ozone and lead

How does acid rain affect the environment?

• It harms plants and animals

• It purifies water bodies

• It enhances plant growth

• It strengthens building materials

What is a potential consequence of acid rain on buildings?

• It has no effect

• It causes erosion

• It makes them more durable

• It improves their appearance

Which of the following is NOT a result of acid rain?

• Increase in air quality

• Harm to aquatic life

• Erosion of rocks

• Damage to forests