6424499
Sources
of Food
- Crops
- Can be protected by
- Biological control
- Which include
the use of
- Natural
enemies
- Natural
enemies
- Which include
the use of
- Chemical control
- which
comprises
- Herbicides
- Pesticides
- can also cause
- Pollution
- such as
- Air Pollution
- Water Pollution
- Air Pollution
- such as
- Pollution
- can also cause
- Herbicides
- which
comprises
- Biological control
- Soil
- requires
- Fertilisers
- Nutrients
- Nutrients
- Appropriate
pH
- Litmus
paper
- Universal
indicator
- pH
Meter
- Litmus
paper
- Fertilisers
- requires
- Need
- Water
- required for
- Growth
- regulated by
- Plant Hormones
- also used in
- Ripening
of fruits
- Weed
killers
- Ripening
of fruits
- also used in
- Plant Hormones
- regulated by
- Growth
- required for
- Sunlight
- Air
- Water
- Can be protected by
- Can Be Increased by
- Intensive production
methods
- Improving plant and animal
varieties
- Intensive production
methods
- such as
- need to be increased due to
- Space
limitation
- Increase in world
population
- Space
limitation
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