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*2022 BECE INT. SCIENCE SOLUTIONS NO. (4) Ditto ditto 💯 4a) - egg, - larva, - pupa - adult. 4b)Air is regarded as mixture because of the following reasons: _(PICK ANYONE OF YOUR CHOICE)_ - Air can be separered into its consituents like oxygen m, nitogen , etc , by the the physical process of fractional distillation (of liquid air). - Air shows the properties combustion , carbon dioxide turns lime water milky and air also turus lime water milky, though very slowly. - Heat and light , etc , are neither given out nor absorbed when air is prepared by mixing the required proportions of oxygen , nitrogen , carbon dioxide , argon ,water vapour., etc. - Air has a variable compostion because air at different places contains different amounts of the various gases, it does not have a definite formula. - Liquid air does not have a fixed boiling point 4c) magnetic pole is a region at each end of a magnet where the external magnetic field is strongest. A bar magnet suspended in Earth's magnetic field orients itself in a north–south direction. 4d) - less seed expenses, - better controlling of stubble, - less work on the soil, - more easily controlling weeds between rows. *COMPLETED 💯✅*