Ecological scientist John Harte observed: “Tropical rainforests cover less than two percent of the planet and yet are the only home of at least 50 percent and possibly as many as 90 percent of all species on earth.
Ilmuwan ekologi John Harte menyatakan, ” Hutan hujan tropis luasnya kurang dari dua persen planet ini tetapi menjadi satu - satunya rumah bagi sedikitnya 50 persen dan mungkin hingga 90 persen semua spesies di bumi.