I need to fill in the blanks. (I will give brainliest to the first answer)

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?

In meiosis ii during anaphase ii which structures separated homologous chromosomes or sister chromatids

Which of the following matches the organisms described with the correct domain? a. archaea--multicellular, eukaryotic organisms that do not have cell walls b. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sources c. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycan d. bacteria--unicellular, eukaryotic organisms that always lack cell walls