Topic: Origin of Flowering Plants
1- History of understanding.
2- What have been pervious proposal.
3- What current understanding.
4- Four main ideas, 5-6 together. Evidence these ideas and what could explain problem.
The format of citation is American Journal of botany, and all resources must be primary resources
Please do not use any secondary resources such as bools, net, and review article.
10 pages, and 10 references