If a pathogen on food got past saliva, which additional defenses in the first line of defense would the pathogen contact?
A. lymphocytes and phagocytes
B. phagocytes and mucus
C. stomach acid and lymphocytes
D. mucus and stomach acid

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

well, i believe that the answer is 2. : 3

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.