<u>Answer</u>:
The skull of a bird looks similar to that of a young dinosaur when they are at their embryo stage.
<u>Explanation</u>:
Bird's skull at their embryo stage looks like young dinosaur's skull. This feature gives evidence of their evolution and their ancestors. The surviving member of the feathered dinosaur family are the birds. The unique skull shape of a bird shaped like a beaker with a dome like cranial resembles with the non-flying ancient dinosaurs. This phenomenon is often named as psuedomorphism. In this phenomenon, these features of the ancestor at its embryo stage is retained by its predecessors.
B. Paleomagnetic data
Hope it helped
Teratology. This is a field within embryology (study of development of embryo and fetuses) that studies the effect of congenital abnormalities on the developing embryo and also teratogens ( substances that affect the normal development of embryo/fetus)
Explanation:
Keratin are important for the structural integrity, cell function and the movement and the proliferation of the cell and healing of the wound. Different tissues in the body contains different combinations of the keratin proteins which play specialized roles.
Keratin has two major function in the skin -
- <u>To hold the cells present in the skin together and form a barrier</u>
- <u>It means the outermost layer of the skin which protects it from environment. </u>
- <u>It also prevents the tearing of the skin.</u>
