Semiconservative replication was not the only model of DNA replication proposed during the mid-1950s, however. In fact, two other prominent hypotheses were put also forth: conservative replication and dispersive replication.
Main idea. Aquatic ecosystems are grouped based on abiotic factors such as water flow, depth,distance from shore, salinity, and latitude. Freshwater ecosystems. The major freshwater ecosystems include ponds, lakes, streams,rivers, and wetlands.
Question: In science we call living things biotic factors and the non-living things abiotic factors. What are some abiotic and biotic factors in the Baltimore stream ecosystem? Answer: Biotic: fish, plants, algae, bacteria; Abiotic: salt, water, rocks, sediment, trash; Ecosystems need a balance of both types of factors to be healthy.