6424533
Description
Mind Map by Ilham Rushdie, updated more than 1 year ago
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Created by Ilham Rushdie
over 7 years ago
|
|
Sources of Food
- Protection of Crops
- Biological
Control: Natural
Method eg.
Introduce
natural
predators PROS:
Environmentally
Friendly CONS:
Imbalance of
ecosystem
- Biological
Control: Natural
Method eg.
Introduce
natural
predators PROS:
Environmentally
Friendly CONS:
Imbalance of
ecosystem
- Plants
- Carry on
Photosynthesis
to make food
- Carry on
Photosynthesis
to make food
- Soil
Conditions
- Fertilisers
- PROS: adds nutrients
to the soil, plants
grow faster
- CONS:
Contamination of
water sources ,
negative impact
on aquatic life,
algae bloom
- CONS:
Contamination of
water sources ,
negative impact
on aquatic life,
algae bloom
- PROS: adds nutrients
to the soil, plants
grow faster
- pH
- Indicates acidic -> taste sour
or alkaline ->taste bitter
- Test
- Litmus Paper acidic :
Blue turns red
alkaline: Red turns
blue
- Universal Indicator Acidic: RED
Alkaline: Blue/Purple
Neutral:Green
- Data Logger
Acidic: pH <7
Alkaline pH >7
Neutral ph 7
- Litmus Paper acidic :
Blue turns red
alkaline: Red turns
blue
- Indicates acidic -> taste sour
or alkaline ->taste bitter
- Fertilisers
- Slash-and-burn: A
method to clear the
land PROS: Cheap
and easy method
CONS: -Cause haze
and air pollution -Eye
Irritation and
breathing problem -
Forest Fires - Soil
Erosion - Loss of
Natural Habitats
which lead to
extinction of wild life
- Crops
- Need water, air
and sunlight
required for growth
regulated by plant
hormones also
used in Ripening of
fruits and weed
killers
- Need water, air
and sunlight
required for growth
regulated by plant
hormones also
used in Ripening of
fruits and weed
killers
Media attachments
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