結果 : impact of soil degradation on food security
3:08

Soil Degradation

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519,584 回視聴 - 2 年前
3:23

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1:35:42

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2:04

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2:28

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3,365 回視聴 - 1 年前

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6:53

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7:09

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2:04

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5:27

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63 回視聴 - 7 年前
2:15

Land degradation is a threat to food security: Minister Zokwana

SABC News
346 回視聴 - 6 年前
3:54

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33 回視聴 - 3 か月前
7:10

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TED-Ed
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IRD
1,166 回視聴 - 8 年前
2:01

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eNCA
1,349 回視聴 - 8 年前
2:01

90 SECONDS FOR SOIL -- What are the main impacts of soil degradation?

RIFS Potsdam
2,464 回視聴 - 11 年前