The california current is a cold ocean current?

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm

2polnis which of the following is an advantage of an in vitro experiment?me

[34 points awarded to the best answer, use facts and/or data] 1.) what's the likelihood of thunderstorms occurring in the state of maryland? {this question is for a project for science, use facts and/or data and explain why . 34 points to the best answer]