- contamination of water sources - negative impact on
aquatic plants -algae bloom(eutrophication) =algae
covers water surface, plants and animals in the water
dies
pH - Indicates acidic or alkaline
Tests - Litmus paper - Acidic, Alkaline, Neutral
Data logger
- Acidic <7 -
Alkaline >7
- Neutral 7
Slash and Burn
-A method to clear land
+cheap and easy method
-Cause haze and air
pollution -Soil erosion
-Loss of natural habitats
lead to extinction of wild
life
Protection Of Crops
Chemical Method
(Herbicides and Pesticides)
- Soil Contamination
-Water Contamination
-Chemicals enter the food
chains
Biological Method (Natural
Method) +environmental friendly
-Inbalance of ecosystem