Zusammenfassung der Ressource
Souces Of Food
- Space Limitation
- Increase in world population
- Improving plant and animal varieties
- Intensve production methods
- Crop
- Water
- Air
- Sunlight
- Growth
- Plant Hormones
- Weed Kilers
- Ripening of fruits
- Chemical Control
- Biological Control
- Natural enemies
- Pesticides
- Pollution
- Air Pollutuion
- Water Pollution
- Herbicides
- Soil
- Fertilisers
- Nutrients
- Appropriate pH
- Universal Indicator
- Litmus Paper
- pH Meter