Ecosystems review

What is an ecosystem?

• A small area with only living organisms

• A large area that includes only nonliving material

• A large area that includes both living and nonliving material

• A specific type of biome

Which of the following is a transition zone between freshwater and saltwater?

• Coral reef

• Mangrove

• Tundra

• Open ocean

What is a food web?

• A method for classifying organisms

• A list of all the producers in an area

• A complex network of all the food chains in an ecosystem

• A single chain of energy transfer among organisms

What is the primary difference between terrestrial and aquatic biomes?

• Salinity, depth, and water flow

• Temperature and precipitation

• Presence of water

• Type of soil

What is a niche in an ecosystem?

• The food an organism eats

• The role or job of an organism within its environment

• The physical space an organism occupies

• The time of day an organism is active