Some grasslands could change into forests over time. Which activity of animals helps prevent this change?

Question

1. Eagles and hawks find shelter close to the ground.
2. Earthworms eat or ruin the seeds of trees.
3. Buffalo trample tree seedlings with their pounding hooves.
4. Birds and insects pollinate many grassland plants.

Answer 1

The activity of animals that helps prevent grasslands from changing into forests is:

3. Buffalo trample tree seedlings with their pounding hooves.

This activity disrupts the growth of young trees, preventing them from establishing themselves and growing into a forested area.