cosystem as a whole, meaning that they also play a part in determining which organisms will succeed in a particular environment. On a more molecular level, the chemical compositions of the water, soil and surrounding air also play a part in determining the face of the ecosystem. When an ecosystem is barren and unoccupied, new organisms colonizing the environment rely on favorable conditions in the environment to allow them to successfully live and reproduce. As you can see, many abiotic factors can play a part in determining the end product, which animals live and succeed in the freshwater ecosystem. The sun provides sunlight for photosynthesis, but also provides heat giving a suitable temperature for organisms to thrive in. The temperature of a freshwater environment can directly affect the environment as a whole and the organisms that occupy it. Section 4: Natural AreasAlmost the whole Columbia River Gorge is a natural area. Its official title the Columbia River Gorge National Scenic Area. The whole Columbia River Gorge is a natural must see site. The Columbia River Gorge is a spectacular river canyon, 80 miles long and up to 4,000 feet deep, cutting the only sea level route through the Cascade Mountain Range. It is more than a natural wonder; the Gorge is a critical transportation corridor and a home. A home to not only people but some very beautiful and unique organisms. The gorge holds biological importance in that it provides a wonderful habitat for many organisms, a lot of, which would be extinct without this rich land. The water body that flows through the gorge also contains some essential nutrients that help to maintain life on land. This area became a National Scenic area in 1986 when there were questions about what should happen to this beautiful land. President Ronald Regan made an act that creating the 292,500 acre Columbia River Gorge National Scenic Area. The National Scenic Area Act does not create a wilderne...
