Review

What is the primary source of energy?

• Decomposers

• Sun

• Consumers

• Producers

Which of the following is the best example of an autotroph?

• Rabbit

• Tree

• Fish

• Mushroom

What term refers to organisms that make their own food using sunlight or chemical energy?

• Heterotrophs

• Consumers

• Producers

• Decomposers

In a food chain, the organism that consumes primary producers is called a:

• Secondary consumer

• Primary consumer

• Tertiary consumer

• Decomposer

Which trophic level contains the highest amount of energy?

• Primary producers

• Primary consumers

• Secondary consumers

• Tertiary consumers

An ecosystem is:

• a group of animals living together

• a community of living and non-living things interacting with each other

• a type of weather pattern

• a single plant species in an area

Which of the following is considered an abiotic factor in an ecosystem?

• Grass

• Birds

• Water

• Fish

What is an example of a biotic factor in an ecosystem?

• Temperature

• Sunlight

• Plants

• Soil

Which of the following is a correct description of a population?

• A) A group of living things that live in the same place at the same time

• B) All the different species in an area

• C) All the abiotic factors in a specific area

• D) All biotic factors

Which of the following best describes ecological balance?

• The depletion of natural resources in an area

• The equal distribution of all species in an ecosystem

• The stability of an ecosystem due to the balanced interaction of all living and non-living components.

• All biotic factors and abiotic factors