Hormones - a chemical realesed by the endocrine system in the bloodstream
The first one should be "Fight or Flight". I'm not sure about the second one.
Answer:
Teens should do more moderate physical activity to help them stay healthy because th less they are active the harder it is for them to actually get up and move. It also helps with hand and eye coordination along with motor skills.
Explanation:
B. Carrot
Apple and grapes belong to the fruit food group.
Breadsticks belong to the grain food group.
Hope this helps, best of luck to you. :)
Number one. Degradation of the antigen. Nunber two. activation of helper T cell. Number three. antigen recognition byT cell. Number four. antibodies recognize antigen.