What factor is essential for the survival of cockroaches?

The survival of cockroaches heavily depends on food availability. Cockroaches are omnivorous scavengers, meaning they consume a variety of organic materials, including food scraps, paper, and even non-food items like glue and soap. Their ability to eat a wide range of substances allows them to thrive in diverse environments, especially in urban areas where food sources are abundant. A steady supply of food enables them to grow, reproduce, and maintain their energy levels, making it a critical factor for their survival.

While cockroaches do require oxygen to breathe, it is the availability of food that directly influences their population dynamics and overall health. Sunlight is not essential, as cockroaches typically prefer dark, humid environments, and salt does not play a significant role in their survival. Therefore, food is the primary necessity for cockroaches, as it supports their biological functions and contributes to their resilience as a pest.