1. substance released by invading pathogens A. immunity
B. Antigens
C. vector

2. Your body's ability to resist the pathogens that cause a particular disease

A. immunity
B. inflamation
C. disease ​

How is the structure of our circulatory system and respiratory system related to the function of both these systems?

Arah is eating lunch with friends outside in the commons area of her school. one of sarah’s friends offers to share a marijuana joint with her. what could be the outcome if sarah were caught smoking marijuana at school? nothing will happen because she did not buy the joint. she could be suspended from school. nothing will happen because she is underage. the consequences would be up to sarah’s parents.

Select all of the possible methods of aids transmission.