Organisms And Populations

G.F. Gause proposed the competitive exclusion principle, also known as Gause’s Law}.
It states that two species competing for the same limiting resources cannot coexist at constant population values. One will outcompete the other.

Step 1: In amensalism, one species is inhibited or harmed while the other remains unaffected.
Step 2: A classic example is Penicillium secreting penicillin that inhibits bacterial growth.
Step 3: The fungus remains unaffected while the bacteria is harmed.