On Earth there are about 73,000 types of trees, of which about 9,200 are still unknown.
We explain what a study says about the reasons why these species are still unknown.
Study reveals that thousands of tree species are still unknown. Why is this happening? | Videos | CNN
2022-02-01T03:17:51.527Z
On Earth there are about 73,000 types of trees, of which about 9,200 are still unknown. We explain what a study says about the reasons | World | CNN
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