Source Of Food

Source Of Food

1. Improving Plants and animal varieties

   • Intensive production method

2. Crops

   • Chemical Control
     • Biological Control
       • Natural enemies
     • Herbicides
       • Herbicides Are Used To Destroy Weeds
     • Pesticides
       • Pesticides Are Used To Destroy  Pests
       • Pollution
         • Fertilisers
           • Nutrients
         • Air Condition
         • Water Pollution
   • Soil
     • Appropriate pH
       • Universal indicator
         • Litmus Paper
         • pH meter
           • 1 = Red 7 = Green 14 = Blue
   • Sunlight
     • Water
       • Air
       • Growth
         • Plant hormones
           • Plant hormones are chemicals that regulate plant growth.
           • Weed Killers
           • Ripening

3. Space limitation

   • increase in world population