Source of food

plants
1. carry out photosynthesis to make food
  1. Raw materials: Carbon Dioxide And Water
  2. End products: Sugar (excess converted to starch)
Soil Condition
1. pH
  1. Indicates acidic or alkaline
    1. Acidic taste sour
    2. Alkaline taste bitter
  2. Tests
    1. There are 3 types way to test soil condition
      1. Data Logger
      2. Universal Indicator
      3. Litmus paper
CROPS
1. crops can by protected
  1. Biological control
    1. natural predators
  2. chemical control
    1. getting rid of pest by using either
      1. herbicides
      2. pesticides
        pesticides causes air pollution and water pollution
2. crops requires SUNLIGHT, WATER and AIR to make food
  1. plant hormones are also used in
    1. ripening of fruits
    2. weed killers
    3. plant hormones are chemicals that regulate plant growth

Resumo de Recurso

	Criado por WOW Yangy quase 8 anos atrás