Title: Valgfritt

Text: An aquatic ecosystem is comprised of many different factors. A primary difference between the different factors are whether or not they are considered biotic or abiotic. Some abiotic factors of aquatic ecosystems include the depth, clarity, pH, turbidity, salinity, temperature, amount of dissolved oxygen, amount of sunlight and the types of dissolved nutrients inside ecosystem. Three primary zones are present in the water, and they are characterized by the type of flora and the level of sunlight. Hver avsnitt vil være en test.

Save test: Bruk dette hvis du vil dele denne skrivetesten (kun for godkjente brukere).