Give possible reasons for the poor performance of the monopolies​

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

Which beat describes the brain stem

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.