Ecosystems

What do we call a single living thing?

• Community

• Ecosystem

• Population

• Organism

The maximum number of organisms that an environment can support is called the:

• Biotic factor

• Abiotic factor

• Carrying capacity

• Independent variable

An abiotic factor is a factor that is...

• A living factor of an environment (e.g. bacteria).

• Dependent on biotic factors.

• A non-living factor of an environment (e.g. sunlight).

• are animals.

In an experiment, the factor that is changed by the scientist is called:

• Dependent variable

• Independent variable

• Controlled variable

• Responding variable

Which term describes all the different populations living and interacting in a particular area?

• Ecosystem

• Organism

• Community

• Population

An organism that can make its own food using sunlight or chemical energy is called a:

• Consumer

• Decomposer

• Producer

• Herbivore

What do we call organisms that break down dead plants and animals?

• Producers

• Consumers

• Predators

• Decomposers

The factor being measured or observed in an experiment is known as the:

• Independent variable

• Controlled variable

• Dependent variable

• Constant variable

Which of the following is an example of a biotic factor?

• Temperature

• Soil pH

• Bacteria

• Humidity

Organisms that cannot make their own food and must eat other organisms are called:

• Producers

• Decomposers

• Consumers

• Autotrophs