Question

3 truths and 1 false for Aquatic ecosystems and Benthos:

A) Benthos are organisms that live on or in the bottom of aquatic ecosystems.
B) Benthos play an important role in aquatic food webs, as they are a food source for many fish and other animals.
C) Benthos can be used as indicators of water quality, as they are sensitive to changes in their environment.
D) Benthic communities are always found in freshwater ecosystems.

Answer 1

Benthos live at the bottom of aquatic ecosystems, contribute to food webs, and indicate water quality. Benthic communities exist in both freshwater and marine environments, so statement D is false.

Step-by-step explanation:

When discussing Aquatic ecosystems and Benthos, three truths are: A) Benthos are organisms that live on or in the bottom of aquatic ecosystems. B) Benthos play an important role in aquatic food webs, serving as a food source for many fish and other animals. C) Benthos can be indicators of water quality, as they are sensitive to changes in their environment. However, D) Benthic communities are not always found in freshwater ecosystems; they are present in marine ecosystems as well.