The algae through the process of photosynthesis constantly change the pH value of water and thus kill all the pathogens (disease causing microorganism).
(The algae through the process of photosynthesis; constantly change; the pH value of water) (The algae through the process of photosynthesis; kill; all the pathogens) (disease; causing; microorganism)
The algae through the process of photosynthesis The algae through the process of photosynthesis disease
constantly change kill causing
the pH value of water
all the pathogens
microorganism