O Level Biology e-Book's MCQs - Complete
Decomposers in Nature Quiz App & e-Book Download - 221
Apps:
MCQ:
Before discharging decomposed sewage into rivers and seas, the
- water is filtered only
- pathogens are removed only
- pH of sewage is neutralized
- water is filtered and pathogens are removed
d
O Level Biology App & e-Book Tests PDF Download
Functions of liver Test 232
Asexual reproduction Test 233
Mammalian Digestive System Test 234
Seed Dispersal and Dispersal by animals Test 235
Free Online Biology Test 236
Voluntary and Reflex Actions Test 237
Nutrition and Introduction Test 238
Central Nervous System Test 239
Adaptations in Small intestine Test 240
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O Level Biology MCQs eBook Download
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