Question

a team of scientists observes two different aquatic environments: a freshwater lake and an estuary where a river meets the ocean. when they compare the types of organisms found in each location, they notice distinct differences. which of the following is the most likely reason for the different species found in these two environments?
the varying levels of water clarity in each environment pro... which organisms can survive, as clearer water always supports a great...
the difference in salinity between the lake and the estuary acts as a n... factor, as most organisms are adapted to live within a narrow range of sa... concentrations.
the estuary is naturally a less healthy environment because the mixing of different water types causes constant chemical imbalances that prevent most species from thriving.
the estuarys strong currents and tidal movements physically prevent many species from establishing permanent populations, forcing them to move to calmer waters.

Explanation:

Los organismos marinos están adaptados a ciertos niveles de salinidad. Un lago de agua dulce tiene una salinidad muy baja, mientras que un estuario donde un río desemboca en el océano tiene una salinidad variable que depende de la dilución del agua de mar por el agua dulce del río. La mayoría de los organismos están adaptados a vivir dentro de un rango estrecho de concentraciones de sal, lo que hace que la diferencia en salinidad sea un factor limitante para la presencia de diferentes especies en estos dos ambientes.

Answer:

The difference in salinity between the lake and the estuary acts as a limiting factor, as most organisms are adapted to live within a narrow range of salt concentrations.