plant classification and environmental factors

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Across
  1. 7. is too extreme the plant will suffer damage
  2. 8. phsiological dryness
  3. 10. crops plant that live in north and south poles
  4. 11. a group of plants that have been selected or selected
  5. 13. crops plant that live for years
  6. 16. slow plant growth due to closed soil surface
  7. 17. groups of living things that have similar characterics
  8. 18. a combination of various environmental factors above ground such as air temprature
  9. 19. the main medium for growing plants
  10. 20. damage to plant because the relationship between the roots and the top of the plant is cut off
Down
  1. 1. crops plant that grow in the tropics
  2. 2. crops plants that are planted by planting certain parts directly
  3. 3. sesecondary taxonomic level under species
  4. 4. which are cultivated where of economic value
  5. 5. the ability of organisms to adapt to the environment
  6. 6. asan inhibiting factor in plant growth
  7. 9. crops plants have a susceptible to live two seasons
  8. 12. crops irrigation relies on rainfall
  9. 14. crops plant are used as fodder for livestock
  10. 15. plants grown within the geographic boundaries of origin