• The farmer is spraying his rice crops to keep pests away from the food source, but this drains into Laguna Bay, which is home to one of the world's most polluted lakes.

• It has been destroyed because of urban, industrial, and agricultural wastes.

• It is also home to a large freshwater fishing industry.

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2] How can fertilisers that are used on a farm eventually reach and kill fish?

• The fertiliser that the farmer sprays on their crops can drain into the nearest river or lake.

• Fertiliser is made out of nitrogen, phosphorus and animal manure.

• While it is good for farming, it can cause algae to grow rapidly which causes no oxygen to go into the water, as well as cause 'dead zones' in the water.

3] Examine Sources 2 & 3

A:

12,000 square metres

B:

The water underground could be limited, as rainwater gets into the soil, and with more buildings, its gonna be covering the soil.

C:

Underground water is limited, and it could become more expensive to extract ground water.

Desertification is a type of land that used to be fertile land but became arid (dry) because of human activity.

2] What are three human activities that can cause desertification?

Human activities that cause desertification can be caused by poor irrigation, deforestation and overgrazing

3] How does desertification lead to food insecurity?

Desertification can reduce farmable land and strains the food system, making it impossible to grow crops

• The link between poverty and deforestation is that people who live under the poverty line are becoming small-scale slash-and-burn farmers since the trees are put on fire or cut down.

2) Is the scene in Source 3 a natural or human environment?

• In source 3, the scene is a human environment because humans planted crops in the picture.

3) Carefully examine Source 1

a) List the changes that you can see in the soil, vegetation, and water that have taken place in this environment.

• What I can see in Source 1 is that the soil is either damp or burnt, there is not much of a variety of vegetation, just trees or bushes, and I do not see any water in the picture.

b) Add changes that have likely occurred that you cannot see

• I think the changes there were that there was a bushfire and rainfall

c) why did this farmer make these changes to the landscape?

• The farmer made those changes to the landscape because it can help the plants/trees to grow faster to restore the forest

• Salinity is when there is lots of salt in the soil which causes growing problems.

• It is considered a cause of degeneration because there is insufficient food to grow.

2) How does forest clearing lead to soil degeneration?

• First clearing leads to soil degeneration since the natural condition changed over time after forest clearing

  
  

3) How does the farmer in source 3 manage salinity on the farm?

• farmers manage salinity by planting native trees to prevent erosion, planting crops to help the water table/

4) Select the farmer's strategies and comment on their potential effectiveness

• I chose the plant trees to prevent erosion strategy, I believe that strategy will be effective because trees thrive in local areas, making them a powerful tool for erosion