CSEE (Form 4) Safety in Our Environment — practice questions

1. Plastic does not break down in the ground and gives off harmful gases if burnt. 2. Recycling recovers the material so it is used again rather than discarded. 3. Landfill and pit latrines are both forms of burying — a landfill is simply a place where solid waste is buried in the ground. 4. Burying is therefore the same method under three different names in the options. 5. Incineration means burning material completely in an incinerator, which is reserved for hazardous clinical waste. _Source: NECTA CSEE 2022 Biology 033, Question 1: Multiple Choice Items, item (ii)_

1. Incineration burns material completely inside an incinerator. 2. Complete burning at high temperature destroys pathogens and dangerous residues. 3. That makes it the method for hazardous clinical waste, where destruction matters more than recovery. 4. Plastics and scrap metal are better recycled, since the material itself still has value. 5. Garden and kitchen refuse decomposes and is better composted than burnt. _Source: NECTA CSEE 2022 Biology 033, Question 1: Multiple Choice Items, item (ii)_