The immune system fights off the pathogen by Leukocytes also known as white blood cells. When a pathogen enters the body the immune system becomes alert to it and sends out sends out the Phagocytes (a type of Leukocytes) which engulfs the pathogens.
Answer:
1. True
2. True
3. True
4. True
5. True
Explanation:
All of the above is true!
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Answer:
Explanation:
Tachycardia means<u> fast</u> heart rate.
Id go with A because the avg for 15 year olds is about 72ish to 100ish.