tropical rainforests contain many large trees
tropical_rainforest is rainforest. forest has not many_trees tropical_rainforest_ecosystem is not biome. tropical_rainforest_ecosystem is biome. forest has millions_of_trees most_large_countries has many_forests most_large_countries has not many_forests tropical_rainforest is not rainforest. tropical_rainforest is natural_thing. forest has many_trees