Modern Agriculture, two

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Across
  1. 5. are substances that are used to control unwanted plants
  2. 6. more efficiet,inovative,agricutlure
  3. 7. substances that are used to kill insects
Down
  1. 1. process by which humans use the breeding of animals and plants to selectively develop particular characteristics
  2. 2. any number of synthetic compound substances created specifically to increase crop yield.
  3. 3. control specific weed species, while leaving the desired crop relatively unscathed
  4. 4. machinery used to go faster through large fields