Botanists studied a rainforest in Nicaragua that had been ravaged by Hurricane Joan in 1988. They found that in the following ten years the number of tree species had increased by at least 200%, and up to 300%, in eight storm-affected plots. Other plots not affected by the hurricane showed little if any such increase.
From this information, it can be concluded that:
A. hurricanes play a very important role in ensuring the long-term survival of tropical rain forests.
B. when the dominant trees in an area of tropical rainforest are destroyed, other species are given a chance to flourish.
C. the overall life of tropical rainforest is increased if large areas are occasionally levelled to the ground.
D. the productivity of a tropical rainforest will be maximised if large areas are occasionally levelled to the ground.