Вопросы для устного ответа по теме
Требуемые условия завершения
- What are crops?
- What do crops produce for people and animals?
- What practices of crop cultivation are there on farm?
- What does it depend on?
- What problem must agriculturists of all countries solve?
- In what ways can be raised food production?
- What way was more popular in traditional agriculture?
- Are yield increases mostly obtained by introduction of new and improved varieties, by better use of fertilizers, better control of pests and diseases, chemical weed control?
- What may yields also be increased by?
- How have been developed the methods of yield increases?
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