you can freeze dry it. You can put the food in an air tight bag.
Cardiovascular system has to do with the heart, so anything to reduce the risk of that system (including the heart, bloodstream etc.) would be the answer for you. So just using Process of elimination:
A) Has to do with external exposure. <em>No</em><em />
B) Keeping hands clean <em>No</em><em />
C) Avoiding cigarette smoke <em>Yes</em>
D) Keeping your vaccinations up to date <em>No</em><em />
So your answer is C.
The correct answer is True all the way true
The entry, establishment, and multiplication of a pathogen is infection. <span />
1. D (A mental rehearsal, also known as re-thinking things over in your head.)
2. A or B (A is basically stress, but it helps you, so not sure.)
3. D (An Stressor causes stress.)
4. C (Guilt)
5. A. (Personality)