Rylee,Leo,Adam

1. Animals, Plants, and Bacteria are all biotic factors. They are all biotic factors because they all interact with the enviroment. The Plants provide food for the animals and the Bacteria affects the animals and plants.

2. Cranes, fish, and long grass are all organisms in the Platte River Ecosystem. The niche of cranes is keeping the fish population under control. The long grass provides shelter for Cranes. It gives them a camoflauge against predators. The fish provide food for the cranes so they dont die of starvation.

3.