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When we were at the Power plant, we saw a couple of toads roaming around. If you looked in the water you could see turtles hiding.
At the Potomac River, there were lots of bugs. The water didn't have very many fish in it, and wasn't very clear.
When we were at Owen's creek, I had fun catching the crayfish, and salamanders. It was cool to see animals actually living in places like that. There were a lot of animals in that ecosystem.
At the power plant, some of the biotic organisms are, fish, salamanders, turtles, toads, and water bugs. Some of the abiotic things were, the water, rocks, temperature, mud/dirt, and the sun. I think that there could have been some competition, but, maybe only between the turtles, to find a good place to live.
At the Potomac River, there are a few relationships, one of them is between the moss on a tree, and a tree. This relationship, is commensalism. The moss is getting a nice cool place to grow, and the tree is getting neither hurt, nor harmed. An example of competition here, would be the crayfish, they're a lot of crayfish, when the population of one organism gets bigger and bigger, those organisms run out of food, which will cause them to die. But, in this case, they can get enough food and, hopefully won't die.
At Owen's creek, I feel like all of these animals kind of, work together in a way. Even though there are a lot of them , they are still hard to find. When we were lifting up the rocks, and looking for them, they were every where, and no where. It was fun looking for them all. If I had to pick what I think is an example of a predator/prey relationship, it would probably have to do with certain types of birds swooping down and getting to them. Maybe finding them when they are trying to hind or get under other rocks.
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