How to frequent are pandemics ?

In the context of the neural impulse, which of the following is true about the depolarization of neuron membranes?

In a cladogram' when does a group of organisms branch off

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.