Question

in an aquatic ecosystem (like an ocean, pond, or river):

1. name two abiotic factors.
2. name two biotic factors.
3. explain how a change in one abiotic factor might affect the whole system.

example: if water temperature rises, some fish may move to cooler areas.

Explanation:

1. Abiotic factors are non - living components. Water temperature and pH level are common in aquatic ecosystems.
2. Biotic factors are living components. Fish and aquatic plants are typical in such ecosystems.
3. Consider oxygen levels. If oxygen (abiotic) decreases, fish (biotic) may suffocate, affecting predators that eat fish and plants that depend on fish waste for nutrients.

Answer:

1. Water temperature, pH level
2. Fish, Aquatic plants
3. If oxygen levels decrease, fish may suffocate. This affects predators (e.g., birds that eat fish) and plants (as fish waste is a nutrient source).