Mike is studying the phylogenetic tree for big cats. He made several statements about the tree. Which one is not true ?

How does pregnancy begin? a) a placenta forms in the uterus b) a sperm reaches an egg in the fallopian tubec) the blastocyst differentiates into two cell types d) contractions begin in the uterine wallapex

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems