Q1. There are mice in the field which act as prey to snakes. Hawks eat the snakes. Some dogs are brought into the field. What will be its effect?
(a) Mice will decrease
(b) Hawks will decrease
(c) Snakes will increase
(d) Mice and snakes will decrease
Answer: (d) Mice and snakes will decrease
Explanation: Dogs may hunt or disturb snakes, reducing their population. With fewer snakes, mice might increase, but dogs may also chase or kill mice, leading to a decline in both. This reflects a disruption in the food chain due to the introduction of a new predator.