Select all that apply. During melosis II:
chromosomes line up along the middle plate in double file
genetic variation results from crossing over
two diploid daughter cells are formed
sister chromatids split
four haploid daughter cells are formed

chromosomes line up along the middle plate in double file

sister chromatids split

four haploid daughter cells are formed

Explanation:

Crossing over or recombination is the interchange of genetic material between non-sister chromatids. This process (crossing over) occurs during the prophase of meiosis I. Meiosis II is the second meiotic division that involves the separation of sister chromatids. In metaphase II, the centromeres of paired chromatids align on the equatorial plate of each daughter cell to be subsequently separated in anaphase II. At the end of meiosis II, four daughter cells are formed (i.e., four gametes), each with the same haploid number of chromosomes.

polar regions of Greenland and Antarctica

Explanation:

The glaciers of the Antarctic and Greenland ice sheets cannot be spoken of differently than mountain glaciers, as they form ice plateaus that rise high up to 4000 m (with individual peaks up to 5140 m) in Antarctica and 3700 m in Greenland, where the ice overlaps with plateaus and mountain ranges. Antarctic ice cover reaches a thickness of over 4300 m (average 1720 m), Greenland 3400 m (average 2300 m).