Answer:
I believe this answer would be C. It looks fairly stable so it should remain that way over time.
Explanation:
Answer:
D
Explanation:
Lymphocytes are the second line of defence
First line of defence indiscriminately defends against all pathogens unlike secondary response which is targeted. First line of defence refers to the external body components like skin, secretions from the body in the alimentary canel
Mucus traps pathogens. Stomach acid kills pathogens
Yes very true because we are not bacteria
