1 reason: Certain white blood cells called lymphocytes are responsible for producing the antibodies which destroy specific pathogens by detecting antigens (foreign chemicals released by the pathogen).
2 reason: Pathogens can produce harmful chemicals called toxins, and white blood cells produce antitoxins to destroy these.
3 reason: White blood cells are key in protecting against pathogens. They ingest the harmful microorganisms (they surround them and take them up - a bit like eating them, but you must use the word ingest).
I found these on internet and a little bit of my knowledge but I hope this helps :)
Well now not only are you killing less aqua animals. But as well as you are affecting less drinking water. But the main town supply of fish and water come from there, thus making it dangerous and hazardous after being infected. Hope this helps
