To solve this problem, we need to analyze each statement related to predation and determine which one cannot be connected to it. Let's evaluate each option:$\newline \bullet$Option 1: It helps in maintaining species diversity in a community.$\newline$ - Predation can control the population of prey species, preventing any one species from dominating the ecosystem.$\newline$ - This helps maintain species diversity.$\newline$ - Therefore, this statement can be connected to predation.$\newline \bullet$Option 2: It might lead to extinction of a species.$\newline$ - Intense predation pressure can lead to the decline or extinction of prey species if they cannot adapt or escape.$\newline$ - Thus, this statement can be connected to predation.$\newline \bullet$Option 3: Both the interacting species are negatively impacted.$\newline$ - In predation, the predator benefits by obtaining food, while the prey is negatively impacted by being consumed.$\newline$ - Therefore, this statement is incorrect as it suggests both species are negatively impacted, which is not true for predation.$\newline \bullet$Option 4: It is necessitated by nature to maintain the ecological balance.$\newline$ - Predation plays a crucial role in controlling population sizes and maintaining ecological balance.$\newline$ - Hence, this statement can be connected to predation.$\newline$Based on the analysis, the statement that cannot be connected to predation is:$\newline$Option 3: Both the interacting species are negatively impacted.$\newline$Therefore, the correct option is Option 3.