its the circulatory system
The description above refers to parietal peritoneum. The <span>parietal peritoneum is referred to as the serous membrane that borders the organs in the abdomen as well as the pelvic cavities. The peritoneum is classified into two and the other is known as the visceral peritoneum which covers the external surfaces. </span>
Alternation of generations is the fluctuation of the diploid and haploid stages in plants. The diploid stage occurs through mitosis while the haploid stage works through meisos and asexual reproduction. In vascular plants, the diploid stage produces seeds. In non-vascular plants, the haploid stage produces the spores.
