Factors That Affect The Food Chain

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Planaria are a type of flatworm that belong to the Phylum Platyhelminthes. They typically live in quiet bodies of water, such as a pond or a river, and can live in either salt or freshwater environments. Also, planaria are scavengers that feed off of dead organisms that sink to the bottom of the body of water. Larger fish enjoy eating planaria, which shows how planaria contribute to the food chain. During the experiment, since the planaria normally live in temperatures around 21° Celsius, the purpose was to test whether an extreme change in water temperature would affect how fast they would travel in their environment compared to at room temperature. If the planaria died off due to these drastic temperature changes, it could therefore mess up the food chain in their environment. Moreover, if the planaria became slower, more animals would be able to eat them, leading to less animals being able to decompose the dead organisms. With continuously rising temperatures due to global warming, there can be drastic extreme temperatures both in the winter season as well as in the summer. In the next few years, with temperatures rising and getting colder by the year, the experiment wanted to discover whether planaria will be able to adapt by testing the difference in how fast it moves from the normal temperature that they live in to extreme temperatures. If there is a drastic temperature change in the planaria’s environment, it is predicted that the planaria will move slower(cm/sec)
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