Final answer:
Madagascar has 10% of the world's rainforest within its national forest reserves, but only 10% of the original coastal lowland forest is left, causing a loss of biodiversity.
Step-by-step explanation:
Madagascar holds 10% of the world's rainforest within its national forest reserves. These rainforests are a habitat with high biodiversity but are under threat due to deforestation.
Out of the original coastal lowland forests in Madagascar, only 10% remains, and it has been suggested that about half of the original biodiversity has been lost.
The rainforests in Madagascar, and more broadly, tropical rainforests around the world, are crucial as they are home to a substantial percentage of the Earth's biodiversity. They are being destroyed at an alarming rate for various economic activities, including cattle farming, timber industry, plantation agriculture, and slash-and-burn farming. This has led to a loss in habitat for indigenous species and contributes to global issues such as climate change and species extinction.