In nature, eutrophication is a common phenomenon in freshwater ecosystems and is really a part of the normal aging process of many lakes and ponds. Some never experience it because of a lack of warmth and light, but many do.Over time, these bodies of freshwater change in terms of how productive or fertile they are.ventually, there are shrubs growing where a body of water used to be. In the 1960s and 1970s, Lake Erie was the most publicized example of eutrophication. Called a dead lake, the smallest and shallowest of the five Great Lakes was swamped for decades with nutrients from heavily developed agricultural and urban lands.
Again, this varies from paragraph to paragraph, depending on the author's purpose, but writers should be wary of paragraphs that only have two or three sentences. It's a pretty good bet that the paragraph is not fully developed if it is that short.
1 Length: 10 short paragraphs (100 â 200 words). 2  Format: Short answer-students must compose the main idea. 3  Topics: Shakespeare, immigration, Wordsworth, nature, Right to Life, social movements, Hawthorne, classroom technology, Internet regulation, and the digital divide.