-to to form sulphuric acid/nitric acid/carbonic acid 1 E5-Fall to the earth with less than 5.0 ( This called acid rain ) Any 3 E 1 1 1 4 (b) Describe the effect of the phenomenon on agriculture and aquatic ecosystem and suggest ways to prevent this phenomenon effect: acid rain : On agriculture 1 E1-Acid rain will increase the acidity of the earth//soil become acidic leaching of minerals 1 E2-Not suitable for cultivation /grow of crops 1 E3-cause some minerals to become insoluble and cannot be absorbed by the plants 1 Any 2E On aquatic ecosystem E1-Accumulation of insoluble aluminum ion /ions in water sources //will increase the acidity of 1 water //reduce the water pH E2-Kill aquatic organism /threatens aquatic life 1 The ways that can be taken: S1-Reduce teh burning of fossil fuel ( which acontains sulphur) 1 S2-Use alternative power source which is nature friendly instead of using the fossil fuel//use 1 10 solar energy/wave energy No Marking scheme Marks (c) A group of farmers planned to develop an agriculture nearby the lake. Besides to obtaining a high agriculture yield, they suggested that the area be made into a eco-tourism area. The following are a part of the details of their planning State the phenomena shows in both diagrams
-to to form sulphuric acid/nitric acid/carbonic acid E5-Fall to the earth with less than 5.0 ( This called acid rain ) Any 3 E 1 1 1 1 4 (b) Describe the effect of the phenomenon on agriculture and aquatic ecosystem and suggest ways to prevent this phenomenon effect: acid rain : On agriculture E1-Acid rain will increase the acidity of the earth//soil become acidic leaching of minerals E2-Not suitable for cultivation /grow of crops E3-cause some minerals to become insoluble and cannot be absorbed by the plants Any 2E On aquatic ecosystem E1-Accumulation of insoluble aluminum ion /ions in water sources //will increase the acidity of water //reduce the water pH E2-Kill aquatic organism /threatens aquatic life The ways that can be taken: S1-Reduce teh burning of fossil fuel ( which acontains sulphur) S2-Use alternative power source which is nature friendly instead of using the fossil fuel//use solar energy/wave energy 1 1 1 1 1 1 1 1 10 No Marking scheme Marks (c) A group of farmers planned to develop an agriculture nearby the lake. Besides to obtaining a high agriculture yield, they suggested that the area be made into a eco-tourism area. The following are a part of the details of their planning State the phenomena shows in both diagrams
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