The main cause of advent of animals is multicellularity, which began ___________ years ago
3 billion years ago
2 billion years ago
1 billion years ago
4 billion years ago
Match the events leading to the origin of life listed under column I with the time frame given under column II; choose the right answer which gives the correct combination of the alphabets of the two columns: Column I Column II Events Time FrameAOrigin of universep3 billion years agoBOrigin of earthq4.6 billion years agoCOrigin of starsr10 billion years agoDOrigin of lifes14 billion years ago t5 billion years ago