Final answer:
The difference between a green CB and a black CB lies in their absorption and reflection of light. Cyanobacteria appear green because they contain chlorophyll, while conventional bacteria appear black because they lack this pigment.
Step-by-step explanation:
The difference between a green CB (cyanobacteria) and a black CB (conventional bacteria) lies in their absorption and reflection of light. Cyanobacteria, which are often green, contain a pigment called chlorophyll that absorbs blue and red light, reflecting green light. On the other hand, conventional bacteria do not contain the same pigment, resulting in them appearing black.
The difference between a green CB and a black CB lies in their absorption and reflection of light. Cyanobacteria appear green because they contain chlorophyll, while conventional bacteria appear black because they lack this pigment.