TOEFL Listening: TPO-TOEFL阅读TPO - 42A9Z9GB82672OY_N$

According to paragraph 5, which of the following determines the sequence in which plant species will colonize a site? A. The extent of growth of a species on a prior site before it begins to colonize a secondary site B. The differences in invasion and growth rates across species C. The degree of fertility of a site D. The kind of disturbance that the site has undergone