Why are swollen lymph nodes a sign of infection?

O

A. Memory cells are stored in the lymph nodes.

O

B. Infections cause increased lymphocyte production.

O

C. Bacteria and viruses mostly attack the lymph nodes.

O

D. The liver produces more lymph during infections.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

which fault and or fold did you find most difficult to diagram

it is a. i hope this .