Answer:
reflect the conditions and changes of an environment where they live.
Explanation:
Effective indicator species need distinct environmental factors to sustain and survive in the environment. They reflect the conditions and changes of an environment where they live.
Fishes, specifically steelhead trouts, are an effective indicator species because steelhead trouts require distinct environmental conditions to survive such as temperature of the water, availability of food, specific waterbed, etc. If there is an absence of steelhead trouts in a particular body of water, scientists can easily determine that the water has environmental problems.
The term "motif" refers to recurring ideas or thoughts that act as a unifying idea, and it sometimes develops as a commentary on characterization or on the central ideas in the work. Sometimes motifs recur so frequently that they enhance the meaning of the novel and often rise to symbolic importance.
Management Information Systems
It greatest role is data collection and management. Everyday information is collated and analyzed, readily available to managers and decision-makers. The system is able to go about different possible scenarios to fool-proof a business decision. The system is also able to provide precise projections of sales based on identifying the factors that determine it and how these factors interact (over time) as business decisions are carried out.