Title: वैकल्पिक

Text: The basic unit of an element is called an atom. An atom is the smallest building block that you can cut an element into without the element breaking down into a lighter element. Two ways that atoms can be broken down are through nuclear fission or radioactive decay. A chemical compound is a substance made up of two or more elements. प्रत्येक पराग्राफले परीक्षण हुनेछ।

Save test: यदि तपाईं यो टाइपिङ परीक्षणलाई साझा गर्न चाहानुहुन्छ भने यो प्रयोग गर्नुहोस् (केवल प्रमाणीकृत प्रयोगकर्ताहरूको लागि)।