Mammary glands are a shared characteristic among mammals and the oldest common ancestor of mammals. this is an example of a a. cladogram. b. synapomorphy. c. phylogeny. d. taxonomy.

Which describes radioactive decay of a substance

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u. s. and mexico. the st. lawrence seaway provides an important trading route for the u. s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time