ALOT OF POINTS! PLEASE HELP I BEG OF YOU 1. Give two similarities between each of the skulls that might lead to the conclusion that these are all related species.

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Explanation:

the eyes and the beak shape on the skulls are similar throughout all of the species and that circle in between their teeth which may be a gap is consistent throughout the skulls.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )