Dakota,Victor+Alice+Minor,+Mo

1. Some examples of biotic factors are: A) Deer and Human-deers can over populate. So humans kill them which allows the population to be balanced. Human gets food and fun out of this :) B) Salmon and Bears-salmon tends to over populate. So bears kill them which allows the population to be balanced and the bears have something to eat :) C) Humans and Fish-Humans fish for...well fish which gives humans entertainment and food. This benefits the fish because it prevents over population.

2.Three organisms in the Platte River ecosystem are: A) Turtles Niche-They prefer grass or prairie lands *Trophic Level 3 B) Tree- the niche is air :) A tree has the Trophic Level 1 C) Fishies- the niche is water *Trophic Level 2

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