Botswana General Certificate of Secondary EducationQueued — topic map only

Agriculture — BGCSE

Content queue opened, and this is a genuinely Botswana-specific subject: cattle, sorghum, small-stock husbandry and the local rainfall calendar.

BGCSE subjects carry no four-digit code · no verification date claimed yet · 2 questions available on this subject's topics (7 marks)

Practise Botswana General Certificate of Secondary Education Browse the bank

Topic map

Ecology, food chains and energy transferEnergy is lost through respiration and movement, so chains are short — say what happens, not just "less energy".
Microorganisms, disease and preventionPrevention answers must be specific and practical: name the measure and the mechanism.

Practice available now (2 questions)

State two practical measures a settlement can take to reduce the spread of a water-borne disease such as cholera, and explain how each measure works.

3 marks · State and explain · Microorganisms, disease and prevention

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Answer: Boil or treat the drinking water (kills the bacteria); wash hands with soap (removes bacteria from hands before food is handled); separate the washing area from the drinking point (removes the source of contamination).

Measure one with mechanism, e.g. boiling kills bacteria
Measure two with mechanism, e.g. soap physically removes bacteria
Both must be specific — "be careful" is not a measure

The instruction "and explain how each works" means two marks per point: one for the measure, one for the mechanism. Two measures with no mechanism earns half.

A farmer ploughs a field and leaves the bare soil exposed for three weeks before planting. Compare the soil conditions on the ploughed field with those under the undisturbed grassland beside it, and explain why the ploughed field loses more topsoil.

4 marks · Compare · Ecology, food chains and energy transfer

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Answer: Ploughed soil is loose, has little plant cover and dries out; the grassland has roots binding particles and a litter layer. Loose bare soil is lifted by wind and washed by rain, so both wind and water erosion remove more topsoil.

Ploughed soil is loose with no plant cover; grassland soil is bound by roots (1 mark)
Bare soil dries and its particles are easily moved; litter and roots hold moisture and particles (1 mark)
Names a mechanism: wind lifting loose particles, or rain washing them downhill (1 mark)
Links the mechanism to the removal of the nutrient-rich topsoil (1 mark)

In compare questions, keep the two sides in the same sentence. A structure of "Field: ... Grassland: ..." repeated beats a long paragraph about one and a short afterthought about the other.