Forests are vital for our planet. They produce the oxygen we breathe and absorb carbon dioxide, helping to regulate the climate. Forests are also home to millions of species of plants and animals, supporting biodiversity. Unfortunately, deforestation, the clearing of forests for other land uses, is a major threat to these valuable ecosystems.
According to the text, what is one important role of forests for the air we breathe?
A) They increase carbon dioxide levels.
B) They produce oxygen.
C) They cause air pollution.
D) They absorb nitrogen.