Sources of food

1. Require
   1. Sunlight , Water , Air
      1. For Growth
         1. Can Be Regulated By Plant Hormones
            1. Also Used In Ripening Of Fruits & Weed KIllers
2. Can Be Protected By
   1. Chemical Control
      1. Which Comprises Of
         1. Herbicide
            1. Weed KIllers
         2. Pesticide
            1. Which can Cause Pollutions
   2. Biological Control
      1. Which Include of The Use Of Natural Predators(Food Chains)
3. Soils Requires
   1. Fertilisers
   2. Appropriate pH
      1. Can Be Measured using
         1. Litmus Paper
         2. Universal Indicator
         3. pH meter

Annotations:

• Intensive farming practices include growing high-yield crops, using fertilisers and pesticides and keeping animals indoors. Food production is increased but there are unwelcome side effects.

1. Intensive farming practices include growing high-yield crops, using fertilisers and pesticides and keeping animals indoors. Food production is increased but there are unwelcome side effects.