Water and carbon are major components of all life.Prokaryotic and eukaryotic are the two major categories of cells making up life on earth.
Answer:
This happened because the check points in cell cycles are not working properly which can help to stop cells having abnormal chromosomes.
See the attachment for proper understanding what actually happened in cell cycle check points.
Can you please upload the photo referred to in the question, so that the organism can be identified? :)
Answer:
Keratin has two main functions: to adhere cells to each other and to form a protective layer on the outside of the skin. In epithelial cells, keratin proteins inside the cell attach to proteins called desmosomes on the surface. The desmosomes act as anchors, holding the cells together.