HOW LIFE BEGAN ON THE EARTH What was the earth like after the "Big Bang"? A cloud of energetic dust at first and then a ball around the sun. In time as a result of its explosion, water vapor and many other gases were produced to make the earth's atmosphere. Water then appeared when it cooled down, offering the possibility for the beginning of life. Why was the earth different? The arrival of small plants growing in the water filled the oceans and seas with oxygen, encouraging the development of small living things. How was life developed on earth? Carbon dioxide and air with oxygen helped life developed. First were insects and amphibians, and then appeared reptiles and dinosaurs, producing young by laying eggs. At first, came mammals producing young from within their bodies. What did small clever animals do? With hands and feet, they spread all over the earth, developing new methods of growing food, hunting and moving around, yet neglecting the environment protection, causing new problems for human being's existence for good. 5. Reading the text once again to decide on the type of writing and summary of the text

Type of writing This is a descriptive writing. Main idea of the passage

The earth came into being after the "Big Bang". Then small plants came growing in the water, followed by green plants appearing on land. In the end appeared small clever animals. Topic sentence of 1st paragraph After the "Big Bang", the earth was just a cloud of energetic dust.