Problem 10 - Biology: The Dynamic Science

Question

In which habitat must organisms adjust regularly to changing salinity? a. salt marsh b. coral reef c. benthic province d. estuary e. riffle

Step-by-Step Solution

Answer

d. Estuary

Step 1: Understanding Habitats

Discuss the general classifications of each habitat. - Salt marshes typically occur along coastlines in temperate climates.- Coral reefs are established in clear, tropical oceans and are well-known for their high biodiversity.- The Benthic province refers to the bottom layers of marine ecosystems that includes the sediment surface and sub-surface layers.- Estuaries are partly enclosed coastal bodies of water where freshwater from rivers meets and mixes with saltwater from the ocean. - Riffles are shallow landforms in flowing channels.

Step 2: Salinity Characteristics of Habitats

Discuss the characteristics of each habitat in terms of salinity. - Salt marshes and coral reefs typically have a consistent level of salinity as they are influenced primarily by the sea and less by freshwater sources. - The Benthic province, being part of the deep ocean floor, has consistent high salinity due to the stable sea environment.- Riffles are formed in freshwater environments such as rivers and streams, therefore they don't experience changes in salinity.- Estuaries, being where rivers meet the sea, encounter a continous mixing of fresh and salt water, causing frequent changes in salinity.

Step 3: Selecting the Correct Answer

From the discussed salinity characteristic of each habitat, the estuary is the one where organisms must adjust regularly to changing salinity.