14 - Forgotten Planet by Murray Leinster

On a once-forgotten planet that was meticulously seeded with life, the story unfolds as the descendants of a crashed spaceship struggle for survival. Initially inhabited by microbes, plants, and insects, the planets ecosystem has evolved drastically, giving rise to colossal flora and fauna. In this thrilling tale, survivors face off against wolf-sized ants, chicken-sized flies, and enormous flying wasps, navigating a world where nature has taken a wild turn. (Summary by Wikipedia)