A major abiotic factor in freshwater ecosystems is the _________________.

What are the 3 zones of a lake?

How does a lake become a forest over time?

What are two factors that characterize a biome?

What is the beginning of a river called?

How do rivers form?

The freshwater biome includes all of the following except?

Any animal that preys upon another animal is called

A fresh water biome is defined as

__________ are bodies of water moving in one direction

A ___________ is a group of organisms that are closely related and can mate to produce fertile offspring.

_____________ is a triangular diagram that shows an ecosystem's loss of energy,

______________ is the place or environment where a plant or animal naturally or normally lives and grows

A large region characterized by a specific type of climate and certain types of plant and animal communities

The number and variety of organisms in a given area during a specific period of time.

A community of organisms and their abiotic, or nonliving, environment.

A treeless wetland ecosystem where plants such as grasses grow

An area of land that is periodically under water or whose soil contains a great deal of moisture

The wetland ecosystem in which shrubs and trees grow

The zone of a lake or pond below the open-water zone, where no light reaches.

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