Study Guide-Unit 9 Depending on Each Other

How are the habitats, populations, and communities related to each other?

• They function independently without any relation.

• They are all types of ecosystems.

• They are interconnected and affect each other.

• They are categories of plants only.

What happens in a balanced ecosystem?

• Species become extinct rapidly.

• One species dominates.

• Resources are depleted quickly.

• Different species exist in stable numbers.

What may happen to a community over the years?

• It remains exactly the same.

• It may evolve or face disruptions.

• It will definitely disappear.

• It will become less diverse.

What are three resources that nature recycles?

• Plastic, metal, and glass.

• Water, nutrients, and energy.

• Soil, rocks, and sand.

• Air, sunlight, and leaves.

What makes up a community?

• Only plants of various kinds.

• Only animals of similar species.

• Groups of interacting organisms.

• Non-living elements like water and air.

What is the difference between a producer and a consumer?

• A producer makes its own food, a consumer buys food.

• A producer creates energy, a consumer uses it.

• A producer makes its own food, a consumer eats other organisms.

• A producer is a type of consumer.

What kind of energy that comes from the past do we use today?

• Solar energy.

• Wind energy.

• Fossil fuels.

• Hydroelectric energy.

What are two processes in the water cycle?

• Evaporation and condensation.

• Photosynthesis and respiration.

• Filtration and sedimentation.

• Combustion and decomposition.

What two gases are recycled by organisms?

• Oxygen and carbon dioxide

• Hydrogen and helium

• Nitrogen and oxygen

• Carbon dioxide and argon

List three examples of natural resources.

• Water, air, oil

• Plastic, glass, steel

• Coal, diamonds, solar energy

• Water, air, coal