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.
What are the abiotic and biotic factors of wetlands? Abiotic factors are sunlight, air, climate, soil, water, rocks, and temperature. Biotic factors are turtlehead flowers, water, trees, butterflires, competition, bac â¦ teria, carrying capacity, plaintain, ash, and the false foxglove.