Indian Geography
Which among the following steps are useful to prevent soil erosion?1. Afforestation2. Contour Ploughing3. Prohibition of shifting cultivation4. Flood controlChoose the correct option from the codes given below :

1 & 2
2 & 4
1, 2 & 4
1, 2, 3 & 4

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Indian Geography
Which among the following species is a tapeworm?

Schistosoma
Taenia
Enterobius
Fasciola

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