According to the diagram provided, which statement is NOT true regarding the cladogram? A)
Birds and crocodiles are more closely related than bird and animals.
B)
Caecilians are more related to sharks than caecilians and frogs and toads.
3
C)
Frogs and toads are more closely related to salamanders than mammals
and sharks.
D)
Crocodilians are more closely related to tortoises and turtles than sharks
and birds.

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

air enters through the nose, moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi andbronchioles till the alveoli.