In mitosis of a single cell, the nucleus B) splits into two.
DNA probably. It might be one of the latter rungs too, thymine, and 2 others I forgot
Bird skeletons are very delicate, and therefore, difficult to be preserved. The bones of the birds are soft. The small animals are very prone to physicochemical as well as biological decay. This is why the fossil record of bird is incomplete and well-preserved fossils of birds are rare to find, except at a few unusual sites.
The correct answer is Lysosomes
Lysosomes are used for digestion of materials in the cell.
