Question

what happens to the other organisms in a food chain when an organism in the middle of the food chain is lost?

Explanation:

In a food chain, each organism has a specific role. If an organism in the middle is lost, the organisms that prey on it (higher - level consumers) will face a lack of food source, which may lead to a decrease in their population due to starvation or increased competition for other limited food resources. On the other hand, the organisms that the lost middle - level organism preys on (lower - level organisms, usually primary consumers or producers if it's a herbivore) will have less predation pressure. Their population may initially increase as there are fewer predators. But if their population grows too much, they may over - consume their own food source (e.g., plants if they are herbivores), which can cause long - term negative impacts on the ecosystem balance.

Answer:

The population of the organisms that prey on the lost middle - level organism will likely decrease (due to lack of food), and the population of the organisms that the lost middle - level organism preys on will likely initially increase (due to reduced predation), but this can lead to subsequent imbalances in the ecosystem.