What does na+ represent? select all that apply. a positively charged sodium ion a sodium ion that has lost an electron a negatively charge sodium ion a sodium ion that has gained an electron a neutral sodium atom

When should a bar graph be used? a. when there is no independent variable. b. when the independent variable is continuous and does not show a relationship to the dependent variable. c. when the independent variable is continuous and shows a causal link to the dependent variable. d. when the independent variable is composed of categories and does not show a relationship.

Which type of neuroglia is found outside of the brain?

What noticeable trend from this graph might be used to make a conclusion?