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5thdesert Presentation Transcript

  • 1. Food Chain and Food Web
  • 2. What is Food Chain and Food web?  •   • Food Chain   •  Food web 
  • 3.  Ecological Pyramids •                Ecological Pyramids •               
  • 4. Types of Pyramids Pyramid Pyramid Pyramid of of of Energy Mass Numbers          
  • 5. Ecological Pyramids• Energy Pyramid• Biomass Pyramid• Numbers Pyramid
  • 6. Types of Pyramids  Pyramid of Numbers  • Pyramid of Mass  • Pyramid of Energy  • 
  • 7. 
  • 8. Pyramids of Energy  •           •               •            • 
  • 9.              •           
  • 10. Primary Productivity
  • 11.             •           •              •                            
  • 12. ‫• ﻭﻋﻠﻰ ﻫﺬﺍ ﺍﻷﺳﺎﺱ ﳝﻜﻦ ﺍﻟﻘﻮﻝ ﺇﻥ ﺍﻟﻨﻈﺎﻡ ﺍﻟﺒﻴﺌﻲ‬‫ﺍﻟﺼﺤﺮﺍﻭﻱ ﻳﺘﻤﻴﺰ ﺑﺘﻜﻮﻳﻦ ﻭﻗﱵ ،ﻏﲑ ﻣﺴﺘﻘﺮ،ﺿﻴﻖ‬‫ﺍﻷﺑﻌﺎﺩ ﻣﻦ ﺣﻴﺚ ﺍﻟﺰﻣﺎﻥ ﻭ ﺍﳌﻜﺎﻥ ﻭﺫﻟﻚ ﺑﺴﺒﺐ ﺗﻮﻓﺮ‬‫ﺍﳌﺎﺀ ﻟﻔﺘﺮﺍﺕ ﻗﺼﲑﺓ ﻣﻦ ﺍﻟﻌﺎﻡ ﻭﰲ ﻓﺘﺮﺍﺕ ﻏﲑ‬ ‫ﻣﻨﺘﻈﻤﺔ.‬
  • 13. ‫ﺍﻟﻐﻄﺎﺀ ﺍﻟﻨﺒﺎﰐ‬ 
  • 14. Roots ‫ﺍﳉﺬﻭﺭ‬ ‫ﺟﺬﻭﺭ ﺃﻓﻘﻴﺔ‬ ‫ﺟﺬﻭﺭ ﺭﺃﺳﻴﺔ‬Horizontal roots Vertical roots
  • 15. Some of plants adaptations    
  • 16. ‫‪‬‬ ‫• ﺗﻨﺎﻭﻝ ﺑﺎﻟﺸﺮﺡ ﻧﻮﻉ ﺍﻟﻐﻄﺎﺀ ﺍﻟﻨﺒﺎﰐ ﰲ ﺍﻟﺴﻠﺴﺔ‬ ‫ﺍﻟﻐﺬﺍﺋﻴﺔ ﰲ ﺍﻟﻨﻈﺎﻡ ﺍﻟﺼﺤﺮﺍﻭﻱ ؟‬‫• ﺷﺎﻫﺪ ﺍﻟﻔﻠﻢ ﻭ ﺍﺭﺑﻂ ﺑﲔ ﻣﺎ ﺗﺸﺎﻫﺪ ﻭ ﺑﲔ ﻣﺎ ﺩﺭﺳﺖ‬ ‫ﻣﻦ ﻣﻔﺎﻫﻴﻢ .‬ ‫• ﺍﻟﻔﻠﻢ ﺑﻌﻨﻮﺍﻥ )ﺍﻟﺮﺑﻴﻊ ﰲ ﺍﻟﻜﻮﻳﺖ/ﻳﻮﺗﻴﻮﺏ(‬
  • 17. www.draloufi.com