What is an ecosystem?

• A group of animals

• A community of plants

• A system of interacting organisms and their environment

• A single organism

Which of the following is a biotic factor in an ecosystem?

• Sunlight

• Water

• Soil

• Plants

What is the primary source of energy in most ecosystems?

• Wind

• Sun

• Fossil fuels

• Water

What term is used to describe the role of an organism in an ecosystem?

• Niche

• Habitat

• Territory

• Domain

Decomposers play a crucial role in ecosystems by:

• Producing oxygen

• Breaking down dead organic matter

• Providing food for herbivores

• Regulating temperature

Which of the following is an example of a abiotic factor in an ecosystem?

• Birds

• Rocks

• Trees

• Insects

What is the process by which green plants make their own food using sunlight?

• Respiration

• Photosynthesis

• Decomposition

• Fermentation

In a food chain, what do herbivores eat?

• Other herbivores

• Carnivores

• Plants

• Decomposers

The trophic level that consists of organisms that feed on both plants and animals is called:

• Producers

• Herbivores

• Omnivores

• Carnivores

What is the process by which water is released from the leaves of plants into the atmosphere?

• Condensation

• Transpiration

• Precipitation

• Evaporation