The right answer is Haploid cells join to form an organism that has a complete set of chromosomes.
Meiosis makes it possible to pass from a cell to 2n chromosomes to 4 cells with n chromosomes, thus ensuring the passage from the diploid phase to the haploid phase.
So from the fertilization phase to the meiosis phase, the cells will be diploid (2n chromosomes). From the meiosis phase to the fertilization phase, it is the haploid phase (n chromosome).
Pupa is the stage between larva and adult. Outside, it usually appears as a dark, still, hardened mass. However, inside it is continuously transforming to the adult stage. During this transformation process, first the larval cells are broken into undifferentiated cells.
Hope this helped!
Good luck :p
Brainliest is appreciated <3
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For question 2:
Nitrogen-fixing bacteria convert
atmospheric N2 to ammonium, a process called nitrogen
fixation<span>.</span>
C. protein ,, mb if it’s wrong