Which one of the following is not a mammalian trait?
a. mammary glands
b. relatively larger brains than other vertebrates
c. a diaphragm
d. a four-chambered heart
e. live birth

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

Choose the diagram that best represents a habitat corridor explain your choice.

Does anyone know what the schooling version of sos mean? example