What can cause disease?
imbalanced heterotrophs smoking viruses chickenpox Bacteria toxins Pesticides
A B C D E F G H
Pathogens: bacteria, protozoans, and viruses .
Bacteria can cause disease
What can cause disease? (A) imbalanced (B) heterotrophs (C) smoking (D) viruses (E) chickenpox (F) Bacteria (G) toxins (H) Pesticides