Cheyenne,+Haide,+&+Cesar

1. Three examples of biotic factors are predation because a predator, fox, gets food and the prey, rabbit, population decreases and soon becomes extint. Another is a bear eats fish but since the fish reproduce a lot of offsprings the fish population stay about the same. The last is a hawk eating snakes, the population of the snake stay about the same because the snake reproduce a lot of offsprings.

2. Three organisms in the Platte River would be fish, beavers, and different types of birds. The fish feed the beavers and birds, the birds keep the fish population about the same, and the beavers build dams.

3. Grass, mouse, snake, owl, hawk, wolves, fungi.