4th Grade Ecosystems Review

The total number of one kind of organism living in a particular place is called a...

• population
• community
• producer
• consumer

All the different populations of organisms living and interacting in a particular place is called a...

• population
• community
• decomposer
• carnivore

Plant eaters are also known as 

• decomposers
• ecology
• carnivores
• herbivores

Meat eaters are also known as

• herbivores
• carnivores
• population
• decomposers

____________ eat both plants and animals.

• Carnivores
• Herbivores
• Producers
• Omnivores

Producers are 

• meat eaters.
• plant eaters.
• green plants that make their own food.

_________ break down dead organisms or wastes and return their nutrients to the soil for plants to use.

• Decomposers
• Omnivores
• Producers

Ecology is

• green plants that make their own food.
• the total number of one kind of organism living in a particular place.
• how organisms interact with each other and their environment. 

The nonliving parts of an ecosystem include

• sunlight, animals, air, soil
• sunlight, plants, air, water
• sunlight, trees, soil, water
• sunlight, soil, air, water

An environment that meets the needs of an organism is called its

• producer
• consumer
• habitat
• food web