टुंड्रा पारिस्थितिकी तंत्र (Tundra ecosystem) को मुख्य रूप से किस रूप में जाना जाता है?

What is the primary purpose of the Sustainable Development Goals (SDGs)?

With reference to microplastics as an environmental health concern, consider the following statements: I. Microplastics can enter the human body through ingestion as well as inhalation. II. Microplastics can act as carriers for toxic chemicals and pathogenic microorganisms. III. Microplastics are rapidly degraded into harmless substances inside the human body. Select the correct answer using the code given below: