Ecosystems

A group of different species living within an ecosystem is called a __________

An __________ is a community of living organisms interacting with one another as well as with nonliving things.

• environmental scientist

• ecosystem

• producer

• consumer

In any ecosystem, the organisms that can make their own food are are called

• consumers

• producers

• decomposers

• primary consumers

In symbiotic relationship

• your body produces vitamins and then uses them for nutrition.

• both organisms involved benefit or are neutrally affected.

• bacteria takes food from your stomach, but does nothing for you.

• one organism benefits while its host gets nothing in return.

In any ecosystem, the organisms that eat dead or decaying organisms are called

• producers

• consumers

• decomposers

• primary consumers

A tick attaching itself to a deer is an example of a _______ relationship

• commensalism

• mutualism

• parasite-host

• predator-prey

A deer is an example of an

• primary consumer

• producer

• decomposer

An animal that eats other animals;

A lion is an example of a

• primary consumer

• secondary consumer

• producer

• decomposer

A series of living things in which each uses the one below it as a food source.

• food chain

• food web

• ecosystem

• house