match the main idea with each paragraph.
Para. 1 Para. 2 Para. 3
Para. 4Para. 5
The formation (形成) of the earth. The importance of water for life. A widely accepted theory about the formation of the universe. The arrival of humans and their impact on the earth. The development of plants and animals on the earth.
Main idea
formation of the earth and the The text mainly tells us the _________ ___________ of life on it. development