Users practicing this topic

Post date	Users	Rates	Content
2019-04-30	zainab baqer	42	Check this topic
2019-07-04	Frequency	60	Check this topic
2018-09-06	mahsa92	80	Check this topic
2019-05-31	toefl 2019	75	Check this topic
2019-05-30	toefl 2019	73	Check this topic
2019-05-30	toefl 2019	68	Check this topic
2018-12-18	joyce05	78	Check this topic
2019-05-30	toefl 2019	73	Check this topic
2019-03-06	jeyjey	75	Check this topic
2019-05-31	toefl 2019	68	Check this topic
2018-11-02	mnoor	71	Check this topic
2019-10-01	Apolytos	61	Check this topic
2019-10-08	mahan vahab kashi	80	Check this topic
2019-09-18	wacklol	60	Check this topic
2019-05-23	vahidvh	68	Check this topic

Topic title: At the end of the Triassic period 200 million years ago, there was a mass-extinction event that caused the extinction of more than half of all living species. It was this extinction event that allowed dinosaurs to become the dominant species for the next

Topic category: Integrated TOEFL Writing