灰姑娘的红舞鞋
幼苗
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Rainforests are forests characterized by high rainfall,with definitions setting minimum normal annual rainfall between 1750–2000 mm (68-78 inches).
Rainforests are home to two-thirds of all the living animal and plant species on Earth.It has been estimated that many hundreds of millions of species of plants,insects and microorganisms are still undiscovered.Tropical rainforests have been called the "jewels of the Earth," and the "world's largest pharmacy," because of the large number of natural medicines discovered there.Rainforests also supply 28% of the worlds oxygen,processing it through photosynthesis from carbon dioxide.
第二个问题自己考虑吧
1年前
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