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But the most successful type of flowering plant
最成功的開花植物
is one that makes up 20% of all plant life on the planet.
是占全世界植物百分之二十的
Grass.
禾本科植物
There are 10,000 different species.
世上共有一萬種 不同的禾本科植物
Today, they form the diet of many thousands of different animals.
禾本科植物 是數千種動物的食物來源
And a few grasses, particularly rich in nutrients,
而且有幾種 營養特別豐富的禾本科植物
have developed a relationship with one animal
與某種動物建立了密切的關系
and together, the two have changed the world.
并共同改變了世界
10,000 years ago, we humans started to cultivate rice
人類在一萬年前開始種植稻子
in order to harvest its food-rich seeds.
以收成其營養豐富的種子
Now, half of the world's population depends on it.
如今世上有半數人口以米為主食
But there is one other grass that has spread even further across the planet
但還有一種植物 因為與人類的關系
due to its relationship with humans...
在地球上的分布范圍更廣
