When the sun reaches the end of released into space, forming a life cycle, the expanded part will be Planetary nebula.
<u>Explanation:</u>
Planetary nebula formed after when the external layer is shredded due to running out of fuel so that it can burn. This external layer of gas expand into the space, the shape of nebula can often be ring shaped or even a bubble. At the centre of this nebula it has the shinning left over middle part of the star. This star can also be seen. The temperature of the nebula is 100000C. The planetary nebula last for about 10000 years between its formation and the recombination.
Answer: Haploid cells join to form an organism that has half the number of chromosomes as the parent. Haploid cells join to form an organism that has a complete set of chromosomes.
Explanation:
Heterocyst-forming cyanobacteria differentiate highly specialized cells to provide fixed nitrogen to the vegetative cells in a filament. In the presence of a source of combined nitrogen such as nitrate or ammonium, Anabaena PCC 7120 grows as long filaments containing hundreds of photosynthetic vegetative cells.
Endometriosis
This occurs when the tissue that lines the womb called endometrium proliferates to other regions outside the uterus. The displaced endometrium is still subject to reproductive hormonal changes such as thickening and breakdown as it occurs in the womb. This causes complications with painful symptoms.
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