Which ion(s) play an important role in sending a nerve impulse?

Which is one step that teens can take to advocate for food security in their communities? ask local gyms for free memberships. visit their mayors to present ideas on how to increase the availability of local yoga classes petition parks departments for walking trails. write letters to the editor of the local newspaper about a lack of full-service grocery stores.

Marijuana is an example of a(n) drug

Which of these is a feature of audible pedestrian crosswalk signals? o a. pedestrian tracking o b. emergency instructions o c. button location signaling od. responses to voice commands