Zusammenfassung der Ressource
SOURCES OF FOOD
- can be increased by
- Intensive production
methods
- Improving plant and
animal varieties
- need to be increased due to
- Space
limitation
- Increased in world
population
- such as
- CROPS
- can be protected by
- Biological Control
- which include
the use of
- Natural
enemies
- Chemical Control
- which
compromises
- Herbicides
- Pesticides
- can also cause
- Pollution
- such as
- water pollution
- Air pollution
- can also cause
- Fertilisers
- Nutrients
- Soil
- Appropriate
pH
- Litmus paper