More cards in this set

Card 6

Front

Give an example of a drought on the plains

Back

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Card 7

Front

When were there plagues of grasshoppers on the plains?

Back

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Card 8

Front

Who invented the windmill pump?

Back

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Card 9

Front

What is the process called when land is ploughed after rain or snowfall to trap moisture?

Back

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Card 10

Front

What wheat was introduced because it was better adapted and by whom?

Back

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Card 11

Front

Who invented barbed wire and when?

Back

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Card 12

Front

Who invented which new plough?

Back

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Card 13

Front

What 3 types of machinery were invented and when?

Back

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