Recycling
An organism that breaks down plant and animal material.
What is a decomposer?
This word means "ocean".
What is marine?
Earth has this many subsystems.
What is four?
This is a collection of interacting parts.
What is a system?
These organisms depend on both producers and consumers for food.
What are omnivores?
Microorganisms that act as decomposers.
What are bacteria?
An organism that makes its own food.
What is a producer?
The layer of gases surrounding Earth.
What is the atmosphere?
This type of ecosystem is on land.
What is terrestrial?
Microscopic animals in aquatic environments.
What are zooplankton?
All food webs should contain this.
What are decomposers?
Feeding relationship between all organisms in an ecosystem.
What is a food web?
The interacting water on Earth.
What is the hydrosphere?
This type of ecosystem is in water.
What is aquatic?
A description of the feeding relationships between organisms in an environment.
What is a food chain?
Bacteria and this are decomposers.
What are fungi?
An organism that cannot make its own food.
What is a consumer?
Earth's core, mantle, and crust.
What is the geosphere?
A consumer at the top of the food web.
What is an apex predator?
A community of organisms interacting with each other and with the nonliving environment.
What is an ecosystem?
Decomposers are divided into these two work groups.
What are grinders and finishers?
Microscopic plantlike organisms in an aquatic environment.
What are phytoplankton?
A system of interacting living organisms on Earth.
What is the biosphere?
A system can be made up of many of these.
What are subsystems?
Organisms in aquatic and terrestrial ecosystems need these to stay alive.
What are matter and energy?