Question

The brown tree snake was accidentally introduced to the island of Guam during World War II. Since then, this snake has caused the extinction of twelve native bird species by eating their eggs and young. One negative result of this snake’s introduction was most likely
1. an increase in diversity as new species evolved to replace extinct species
2. an increase in mosquitoes due to an increase in bird species in the environment
3. a disruption of food chains and food webs in Guam’s ecosystems
4. an abundance of brown tree snakes as a food source for humans

Answer 1

Answer:

3. A disruption of food chains and food webs in Guam's ecosystems.

Explanation:

In the food chain, if one species goes extinct, other species go extinct too. If the bird species in that area goes extinct, animals that eat birds will probably go extinct or the number of surviving animals will drop. Things that the birds eat may thrive because nothing's there to eat them. This causes overpopulation.

Answer 2

Answer:

3.

Explanation:

Since the snake was introduced, many species were killed off which severely impacted food chains and webs