Q."Amazon forest is considered to be the lungs of the planet" - Justify this statement.

Step 1. The chapter describes the Amazon rainforest as 'a vast area, harbouring millions of species, also called "Lungs of the planet"', directly naming this title in the context of its ongoing destruction for agriculture and human settlement.

Step 2. The title reflects the Amazon's role in the planet's carbon and oxygen cycles: as one of the largest continuous forest ecosystems on Earth, its enormous plant biomass carries out photosynthesis at a scale that meaningfully absorbs atmospheric CO2 and contributes oxygen — the same basic function human lungs perform for the body, exchanging gases at a scale that affects the wider system.

Step 3. The chapter's broader Habitat Loss discussion reinforces why this matters: it notes that tropical rainforests once covered 14% of Earth's land surface and now cover less than 6%, and that large-scale deforestation elsewhere prevents emitted CO2 from being fully absorbed, driving up atmospheric concentration — so a forest of the Amazon's scale being cleared directly weakens the planet's capacity to regulate its own climate. …

Justify the title using the Amazon's forest scale, its stated role harbouring millions of species, and the chapter's climate-cha …

• Treating the title as purely poetic without explaining the actual carbon-absorption/oxygen mechanism behind it. …