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📖
Featured Word B2

biosphere (noun)

生物圈是地球上所有生态系统的总和，包括所有生物及其生存的环境。它是地球上生命存在的一个薄层。

💬 Example

"Recycling and reducing waste are small steps we can take to help protect the biosphere."

💡 Memory Tip

Think of 'BIO' (life) and 'SPHERE' (the Earth's shape). It's the 'Life-Sphere.'

🏛️ Origin

🔗 Synonyms
ecosphere ecosystem environment nature life zone
⚠️ Common Mistakes

Using 'a biosphere' for Earth. → The biosphere.

Confusing 'biosphere' with 'atmosphere'. → The biosphere includes life; the atmosphere is the air.

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